53121333072 has 40 divisors (see below), whose sum is σ = 137239412544. Its totient is φ = 17705910784.

The previous prime is 53121333061. The next prime is 53121333091. The reversal of 53121333072 is 27033312135.

53121333072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 941368 + ... + 996200.

Almost surely, 2^53121333072 is an apocalyptic number.

It is an amenable number.

53121333072 is an abundant number, since it is smaller than the sum of its proper divisors (84118079472).

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

53121333072 is a wasteful number, since it uses less digits than its factorization.

53121333072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75027 (or 75021 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 30.

The spelling of 53121333072 in words is "fifty-three billion, one hundred twenty-one million, three hundred thirty-three thousand, seventy-two".