51656676475 has 6 divisors (see below), whose sum is σ = 64054278860. Its totient is φ = 41325341160.

The previous prime is 51656676443. The next prime is 51656676497. The reversal of 51656676475 is 57467665615.

It is not a de Polignac number, because 51656676475 - 2⁵ = 51656676443 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 1033133505 + ... + 1033133554.

Almost surely, 2^51656676475 is an apocalyptic number.

51656676475 is a deficient number, since it is larger than the sum of its proper divisors (12397602385).

51656676475 is a wasteful number, since it uses less digits than its factorization.

51656676475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066267069 (or 2066267064 counting only the distinct ones).

The product of its digits is 31752000, while the sum is 58.

The spelling of 51656676475 in words is "fifty-one billion, six hundred fifty-six million, six hundred seventy-six thousand, four hundred seventy-five".