56772711897 has 32 divisors (see below), whose sum is σ = 83114889216. Its totient is φ = 34184678400.

The previous prime is 56772711889. The next prime is 56772711901. The reversal of 56772711897 is 79811727765.

It is not a de Polignac number, because 56772711897 - 2³ = 56772711889 is a prime.

It is a super-2 number, since 2×56772711897² (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 56772711897.

It is not an unprimeable number, because it can be changed into a prime (56772712897) 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 31 ways as a sum of consecutive naturals, for example, 5236272 + ... + 5247102.

It is an arithmetic number, because the mean of its divisors is an integer number (2597340288).

Almost surely, 2^56772711897 is an apocalyptic number.

It is an amenable number.

56772711897 is a deficient number, since it is larger than the sum of its proper divisors (26342177319).

56772711897 is a wasteful number, since it uses less digits than its factorization.

56772711897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11861.

The product of its digits is 10372320, while the sum is 60.

The spelling of 56772711897 in words is "fifty-six billion, seven hundred seventy-two million, seven hundred eleven thousand, eight hundred ninety-seven".