56776750502521 has 16 divisors (see below), whose sum is σ = 66378734838400. Its totient is φ = 48543202184400.

The previous prime is 56776750502503. The next prime is 56776750502557. The reversal of 56776750502521 is 12520505767765.

It is not a de Polignac number, because 56776750502521 - 2⁷ = 56776750502393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56776750502561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208339755 + ... + 208612096.

It is an arithmetic number, because the mean of its divisors is an integer number (4148670927400).

Almost surely, 2^{56776750502521} is an apocalyptic number.

It is an amenable number.

56776750502521 is a deficient number, since it is larger than the sum of its proper divisors (9601984335879).

56776750502521 is an equidigital number, since it uses as much as digits as its factorization.

56776750502521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416952269 (or 416952255 counting only the distinct ones).

The product of its (nonzero) digits is 30870000, while the sum is 58.

The spelling of 56776750502521 in words is "fifty-six trillion, seven hundred seventy-six billion, seven hundred fifty million, five hundred two thousand, five hundred twenty-one".