113566640020 has 96 divisors (see below), whose sum is σ = 253744444800. Its totient is φ = 42573786624.

The previous prime is 113566639999. The next prime is 113566640027. The reversal of 113566640020 is 20046665311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113566640027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32015887 + ... + 32019433.

It is an arithmetic number, because the mean of its divisors is an integer number (2643171300).

Almost surely, 2^113566640020 is an apocalyptic number.

113566640020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113566640020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126872222400).

113566640020 is an abundant number, since it is smaller than the sum of its proper divisors (140177804780).

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

113566640020 is a wasteful number, since it uses less digits than its factorization.

113566640020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457 (or 4455 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 113566640020 in words is "one hundred thirteen billion, five hundred sixty-six million, six hundred forty thousand, twenty".