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68719476732 = 22343691131071
BaseRepresentation
bin111111111111111111…
…111111111111111100
320120101011211010011220
4333333333333333330
52111214141223412
651322544513340
74651634625444
oct777777777774
9216334733156
1068719476732
1127164397a85
121139a01b850
13663206b88a
14347c925124
151bc2ebb68c
hexffffffffc

68719476732 has 24 divisors (see below), whose sum is σ = 160350339072. Its totient is φ = 22905793200.

The previous prime is 68719476731. The next prime is 68719476767. The reversal of 68719476732 is 23767491786.

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

It is a zygodrome in base 2.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458757 + ... + 589827.

It is an arithmetic number, because the mean of its divisors is an integer number (6681264128).

Almost surely, 268719476732 is an apocalyptic number.

It is an amenable number.

68719476732 is an abundant number, since it is smaller than the sum of its proper divisors (91630862340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68719476732 is a wasteful number, since it uses less digits than its factorization.

68719476732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174769 (or 174767 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 60.

The spelling of 68719476732 in words is "sixty-eight billion, seven hundred nineteen million, four hundred seventy-six thousand, seven hundred thirty-two".

Divisors: 1 2 3 4 6 12 43691 87382 131071 131073 174764 262142 262146 393213 524284 524292 786426 1572852 5726623061 11453246122 17179869183 22906492244 34359738366 68719476732