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68719476736 = 236
BaseRepresentation
bin100000000000000000…
…0000000000000000000
320120101011211010012001
41000000000000000000
52111214141223421
651322544513344
74651634625451
oct1000000000000
9216334733161
1068719476736
1127164397a89
121139a01b854
13663206b891
14347c925128
151bc2ebb691
hex1000000000

68719476736 has 37 divisors (see below), whose sum is σ = 137438953471. Its totient is φ = 34359738368.

The previous prime is 68719476731. The next prime is 68719476767. The reversal of 68719476736 is 63767491786.

Multipling 68719476736 by its sum of digits (64), we get a 42-nd power (4398046511104 = 242).

68719476736 divided by its sum of digits (64) gives a 30-th power (1073741824 = 230).

The square root of 68719476736 is 262144.

The cubic root of 68719476736 is 4096.

It is a perfect power (a square, a cube, a biquadrate, a 6-th power, a 9-th power, a 12-th power, a 18-th power, a 36-th power), and thus also a powerful number.

It is a Jordan-Polya number, since it can be written as (2!)36.

It is an ABA number since it can be written as A⋅BA, here for A=16, B=4.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

Its product of digits (64012032) is a multiple of the sum of its prime divisors (2).

It is a nialpdrome in base 2, base 4, base 8 and base 16.

It is not an unprimeable number, because it can be changed into a prime (68719476731) by changing a digit.

In principle, a polygon with 68719476736 sides can be constructed with ruler and compass.

It is an impolite number, since it cannot be written as a nontrivial sum of consecutive naturals.

Almost surely, 268719476736 is an apocalyptic number.

68719476736 is the 262144-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68719476736

68719476736 is a deficient number, since it is larger than the sum of its proper divisors (68719476735).

68719476736 is an frugal number, since it uses more digits than its factorization.

68719476736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 2 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 64.

The spelling of 68719476736 in words is "sixty-eight billion, seven hundred nineteen million, four hundred seventy-six thousand, seven hundred thirty-six".

Divisors: 1 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152 4194304 8388608 16777216 33554432 67108864 134217728 268435456 536870912 1073741824 2147483648 4294967296 8589934592 17179869184 34359738368 68719476736