56664720476 has 36 divisors (see below), whose sum is σ = 122717688912. Its totient is φ = 22416810624.

The previous prime is 56664720449. The next prime is 56664720481. The reversal of 56664720476 is 67402746665.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5982665 + ... + 5992128.

It is an arithmetic number, because the mean of its divisors is an integer number (3408824692).

Almost surely, 2^56664720476 is an apocalyptic number.

It is an amenable number.

56664720476 is an abundant number, since it is smaller than the sum of its proper divisors (66052968436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56664720476 is a wasteful number, since it uses less digits than its factorization.

56664720476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11974830 (or 11974815 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 56664720476 in words is "fifty-six billion, six hundred sixty-four million, seven hundred twenty thousand, four hundred seventy-six".