56956771377 has 40 divisors (see below), whose sum is σ = 92869885152. Its totient is φ = 34500124800.

The previous prime is 56956771369. The next prime is 56956771381. The reversal of 56956771377 is 77317765965.

It is a happy number.

56956771377 is a `hidden beast` number, since 5 + 69 + 567 + 7 + 1 + 3 + 7 + 7 = 666.

It is not a de Polignac number, because 56956771377 - 2³ = 56956771369 is a prime.

It is a super-2 number, since 2×56956771377² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56956771307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1682377 + ... + 1715897.

Almost surely, 2^56956771377 is an apocalyptic number.

It is an amenable number.

56956771377 is a deficient number, since it is larger than the sum of its proper divisors (35913113775).

56956771377 is a wasteful number, since it uses less digits than its factorization.

56956771377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35451 (or 35442 counting only the distinct ones).

The product of its digits is 58344300, while the sum is 63.

The spelling of 56956771377 in words is "fifty-six billion, nine hundred fifty-six million, seven hundred seventy-one thousand, three hundred seventy-seven".