68766111056 has 40 divisors (see below), whose sum is σ = 135639176424. Its totient is φ = 33764290560.

The previous prime is 68766111047. The next prime is 68766111067. The reversal of 68766111056 is 65011166786.

It can be written as a sum of positive squares in 4 ways, for example, as 8880400 + 68757230656 = 2980^2 + 262216^2 .

It is a super-2 number, since 2×68766111056² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68766111056.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545096 + ... + 659288.

Almost surely, 2^68766111056 is an apocalyptic number.

It is an amenable number.

68766111056 is a deficient number, since it is larger than the sum of its proper divisors (66873065368).

68766111056 is a wasteful number, since it uses less digits than its factorization.

68766111056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114879 (or 114873 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 68766111056 in words is "sixty-eight billion, seven hundred sixty-six million, one hundred eleven thousand, fifty-six".