56701511220 has 48 divisors (see below), whose sum is σ = 158821463808. Its totient is φ = 15114952320.

The previous prime is 56701511189. The next prime is 56701511233. The reversal of 56701511220 is 2211510765.

56701511220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56701511220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116 + ... + 336755.

It is an arithmetic number, because the mean of its divisors is an integer number (3308780496).

Almost surely, 2^56701511220 is an apocalyptic number.

It is an amenable number.

56701511220 is an abundant number, since it is smaller than the sum of its proper divisors (102119952588).

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

56701511220 is a wasteful number, since it uses less digits than its factorization.

56701511220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340680 (or 340678 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The spelling of 56701511220 in words is "fifty-six billion, seven hundred one million, five hundred eleven thousand, two hundred twenty".