51597948420 has 72 divisors (see below), whose sum is σ = 156619008000. Its totient is φ = 13750201920.

The previous prime is 51597948359. The next prime is 51597948431. The reversal of 51597948420 is 2484979515.

It is a happy number.

51597948420 is a `hidden beast` number, since 5 + 1 + 597 + 9 + 4 + 8 + 42 + 0 = 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, 174205 + ... + 365435.

It is an arithmetic number, because the mean of its divisors is an integer number (2175264000).

Almost surely, 2^51597948420 is an apocalyptic number.

It is an amenable number.

51597948420 is an abundant number, since it is smaller than the sum of its proper divisors (105021059580).

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

51597948420 is a wasteful number, since it uses less digits than its factorization.

51597948420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192745 (or 192740 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 51597948420 in words is "fifty-one billion, five hundred ninety-seven million, nine hundred forty-eight thousand, four hundred twenty".