51657083628552 has 48 divisors (see below), whose sum is σ = 145086253406640. Its totient is φ = 17219027875536.

The previous prime is 51657083628547. The next prime is 51657083628569. The reversal of 51657083628552 is 25582638075615.

It is a happy number.

51657083628552 is a `hidden beast` number, since 5 + 1 + 6 + 5 + 70 + 8 + 3 + 6 + 2 + 8 + 552 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51657083628552.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13286284998 + ... + 13286288885.

It is an arithmetic number, because the mean of its divisors is an integer number (3022630279305).

Almost surely, 2^{51657083628552} is an apocalyptic number.

It is an amenable number.

51657083628552 is an abundant number, since it is smaller than the sum of its proper divisors (93429169778088).

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

51657083628552 is a wasteful number, since it uses less digits than its factorization.

51657083628552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26572573904 (or 26572573888 counting only the distinct ones).

The product of its (nonzero) digits is 120960000, while the sum is 63.

The spelling of 51657083628552 in words is "fifty-one trillion, six hundred fifty-seven billion, eighty-three million, six hundred twenty-eight thousand, five hundred fifty-two".