20513472120 has 48 divisors (see below), whose sum is σ = 66668785560. Its totient is φ = 5470259136.

The previous prime is 20513472029. The next prime is 20513472157. The reversal of 20513472120 is 2127431502.

20513472120 is a `hidden beast` number, since 20 + 51 + 3 + 472 + 120 = 666.

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 11 ways as a sum of consecutive naturals, for example, 28490574 + ... + 28491293.

Almost surely, 2^20513472120 is an apocalyptic number.

20513472120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20513472120 is an abundant number, since it is smaller than the sum of its proper divisors (46155313440).

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

20513472120 is a wasteful number, since it uses less digits than its factorization.

20513472120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56981884 (or 56981877 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The spelling of 20513472120 in words is "twenty billion, five hundred thirteen million, four hundred seventy-two thousand, one hundred twenty".