56599263978 has 16 divisors (see below), whose sum is σ = 114888059040. Its totient is φ = 18584832816.

The previous prime is 56599263971. The next prime is 56599263991. The reversal of 56599263978 is 87936299565.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56599263971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70396693 + ... + 70397496.

It is an arithmetic number, because the mean of its divisors is an integer number (7180503690).

Almost surely, 2^56599263978 is an apocalyptic number.

56599263978 is an abundant number, since it is smaller than the sum of its proper divisors (58288795062).

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

56599263978 is a wasteful number, since it uses less digits than its factorization.

56599263978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140794261.

The product of its digits is 220449600, while the sum is 69.

The spelling of 56599263978 in words is "fifty-six billion, five hundred ninety-nine million, two hundred sixty-three thousand, nine hundred seventy-eight".