56231159820 has 48 divisors (see below), whose sum is σ = 171760635648. Its totient is φ = 13631796160.

The previous prime is 56231159717. The next prime is 56231159821. The reversal of 56231159820 is 2895113265.

It is a super-3 number, since 3×56231159820³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (56231159821) 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, 42598704 + ... + 42600023.

It is an arithmetic number, because the mean of its divisors is an integer number (3578346576).

Almost surely, 2^56231159820 is an apocalyptic number.

It is an amenable number.

56231159820 is an abundant number, since it is smaller than the sum of its proper divisors (115529475828).

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

56231159820 is a wasteful number, since it uses less digits than its factorization.

56231159820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85198750 (or 85198748 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 56231159820 in words is "fifty-six billion, two hundred thirty-one million, one hundred fifty-nine thousand, eight hundred twenty".