20513183112 has 96 divisors (see below), whose sum is σ = 56397332160. Its totient is φ = 6734448000.

The previous prime is 20513183083. The next prime is 20513183221. The reversal of 20513183112 is 21138131502.

20513183112 is a `hidden beast` number, since 20 + 513 + 18 + 3 + 112 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7825162 + ... + 7827782.

It is an arithmetic number, because the mean of its divisors is an integer number (587472210).

Almost surely, 2^20513183112 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 20513183112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28198666080).

20513183112 is an abundant number, since it is smaller than the sum of its proper divisors (35884149048).

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

20513183112 is a wasteful number, since it uses less digits than its factorization.

20513183112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235 (or 4228 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 20513183112 in words is "twenty billion, five hundred thirteen million, one hundred eighty-three thousand, one hundred twelve".