52121955996 has 72 divisors (see below), whose sum is σ = 146442192624. Its totient is φ = 15496515840.

The previous prime is 52121955971. The next prime is 52121956027. The reversal of 52121955996 is 69955912125.

52121955996 is a `hidden beast` number, since 5 + 21 + 21 + 9 + 5 + 599 + 6 = 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 23 ways as a sum of consecutive naturals, for example, 1220721 + ... + 1262696.

It is an arithmetic number, because the mean of its divisors is an integer number (2033919342).

Almost surely, 2^52121955996 is an apocalyptic number.

It is an amenable number.

52121955996 is an abundant number, since it is smaller than the sum of its proper divisors (94320236628).

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

52121955996 is a wasteful number, since it uses less digits than its factorization.

52121955996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483491 (or 2483486 counting only the distinct ones).

The product of its digits is 2187000, while the sum is 54.

The spelling of 52121955996 in words is "fifty-two billion, one hundred twenty-one million, nine hundred fifty-five thousand, nine hundred ninety-six".