47720638120 has 32 divisors (see below), whose sum is σ = 113687404200. Its totient is φ = 17965416448.

The previous prime is 47720638117. The next prime is 47720638159. The reversal of 47720638120 is 2183602774.

47720638120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 47638300644 + 82337476 = 218262^2 + 9074^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35088025 + ... + 35089384.

Almost surely, 2^47720638120 is an apocalyptic number.

47720638120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47720638120 is an abundant number, since it is smaller than the sum of its proper divisors (65966766080).

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

47720638120 is a wasteful number, since it uses less digits than its factorization.

47720638120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70177437 (or 70177433 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 47720638120 in words is "forty-seven billion, seven hundred twenty million, six hundred thirty-eight thousand, one hundred twenty".