76561763957 has 4 divisors (see below), whose sum is σ = 87499158816. Its totient is φ = 65624369100.

The previous prime is 76561763939. The next prime is 76561763989. The reversal of 76561763957 is 75936716567.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76561763957 - 2¹⁰ = 76561762933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76561763957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76561765957) 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 3 ways as a sum of consecutive naturals, for example, 5468697419 + ... + 5468697432.

It is an arithmetic number, because the mean of its divisors is an integer number (21874789704).

Almost surely, 2^76561763957 is an apocalyptic number.

It is an amenable number.

76561763957 is a deficient number, since it is larger than the sum of its proper divisors (10937394859).

76561763957 is a wasteful number, since it uses less digits than its factorization.

76561763957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10937394858.

The product of its digits is 50009400, while the sum is 62.

The spelling of 76561763957 in words is "seventy-six billion, five hundred sixty-one million, seven hundred sixty-three thousand, nine hundred fifty-seven".