51372063353556 has 144 divisors (see below), whose sum is σ = 143409741995520. Its totient is φ = 15375377816640.

The previous prime is 51372063353531. The next prime is 51372063353561. The reversal of 51372063353556 is 65535336027315.

It is a happy number.

51372063353556 is a `hidden beast` number, since 5 + 1 + 3 + 7 + 2 + 0 + 6 + 33 + 53 + 556 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116757631 + ... + 117196793.

It is an arithmetic number, because the mean of its divisors is an integer number (995900986080).

Almost surely, 2^{51372063353556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51372063353556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71704870997760).

51372063353556 is an abundant number, since it is smaller than the sum of its proper divisors (92037678641964).

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

51372063353556 is a wasteful number, since it uses less digits than its factorization.

51372063353556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442826 (or 442821 counting only the distinct ones).

The product of its (nonzero) digits is 25515000, while the sum is 54.

The spelling of 51372063353556 in words is "fifty-one trillion, three hundred seventy-two billion, sixty-three million, three hundred fifty-three thousand, five hundred fifty-six".