56578851840 has 704 divisors, whose sum is σ = 218684841984. Its totient is φ = 12206211072.

The previous prime is 56578851829. The next prime is 56578851851. The reversal of 56578851840 is 4815887565.

It is an interprime number because it is at equal distance from previous prime (56578851829) and next prime (56578851851).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 338795437 + ... + 338795603.

Almost surely, 2^56578851840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56578851840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109342420992).

56578851840 is an abundant number, since it is smaller than the sum of its proper divisors (162105990144).

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

56578851840 is a wasteful number, since it uses less digits than its factorization.

56578851840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 10752000, while the sum is 57.

The spelling of 56578851840 in words is "fifty-six billion, five hundred seventy-eight million, eight hundred fifty-one thousand, eight hundred forty".