56311865280 has 224 divisors, whose sum is σ = 216715726080. Its totient is φ = 13651338240.

The previous prime is 56311865249. The next prime is 56311865329. The reversal of 56311865280 is 8256811365.

56311865280 is a `hidden beast` number, since 5 + 6 + 3 + 118 + 6 + 528 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 201214 + ... + 391293.

It is an arithmetic number, because the mean of its divisors is an integer number (967480920).

Almost surely, 2^56311865280 is an apocalyptic number.

It is an amenable number.

56311865280 is an abundant number, since it is smaller than the sum of its proper divisors (160403860800).

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

56311865280 is a wasteful number, since it uses less digits than its factorization.

56311865280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592544 (or 592528 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 56311865280 in words is "fifty-six billion, three hundred eleven million, eight hundred sixty-five thousand, two hundred eighty".