51656450752075 has 24 divisors (see below), whose sum is σ = 69036995096048. Its totient is φ = 38115464042880.

The previous prime is 51656450752063. The next prime is 51656450752097. The reversal of 51656450752075 is 57025705465615.

It is not a de Polignac number, because 51656450752075 - 2¹¹ = 51656450750027 is a prime.

It is a Duffinian number.

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, 63843297 + ... + 64647346.

Almost surely, 2^{51656450752075} is an apocalyptic number.

51656450752075 is a deficient number, since it is larger than the sum of its proper divisors (17380544343973).

51656450752075 is a wasteful number, since it uses less digits than its factorization.

51656450752075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128491903 (or 128491898 counting only the distinct ones).

The product of its (nonzero) digits is 44100000, while the sum is 58.

The spelling of 51656450752075 in words is "fifty-one trillion, six hundred fifty-six billion, four hundred fifty million, seven hundred fifty-two thousand, seventy-five".