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68117200801 = 136617927057
BaseRepresentation
bin111111011100000110…
…011111111110100001
320111211012112022220221
4333130012133332201
52104001000411201
651143112003041
74631002440106
oct773406377641
9214735468827
1068117200801
1126985425181
1211250390481
1365673570a0
143422948aad
151b8a19e4a1
hexfdc19ffa1

68117200801 has 8 divisors (see below), whose sum is σ = 73467973544. Its totient is φ = 62782283520.

The previous prime is 68117200787. The next prime is 68117200817. The reversal of 68117200801 is 10800271186.

It can be written as a sum of positive squares in 4 ways, for example, as 1371961600 + 66745239201 = 37040^2 + 258351^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68117200801 - 211 = 68117198753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68117200001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3954936 + ... + 3972121.

It is an arithmetic number, because the mean of its divisors is an integer number (9183496693).

Almost surely, 268117200801 is an apocalyptic number.

It is an amenable number.

68117200801 is a deficient number, since it is larger than the sum of its proper divisors (5350772743).

68117200801 is a wasteful number, since it uses less digits than its factorization.

68117200801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927731.

The product of its (nonzero) digits is 5376, while the sum is 34.

Adding to 68117200801 its reverse (10800271186), we get a palindrome (78917471987).

The spelling of 68117200801 in words is "sixty-eight billion, one hundred seventeen million, two hundred thousand, eight hundred one".

Divisors: 1 13 661 8593 7927057 103051741 5239784677 68117200801