51545205576 has 64 divisors (see below), whose sum is σ = 146673374400. Its totient is φ = 16762665600.

The previous prime is 51545205541. The next prime is 51545205587. The reversal of 51545205576 is 67550254515.

51545205576 is a `hidden beast` number, since 5 + 1 + 5 + 4 + 520 + 55 + 76 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2901330 + ... + 2919041.

It is an arithmetic number, because the mean of its divisors is an integer number (2291771475).

Almost surely, 2^51545205576 is an apocalyptic number.

It is an amenable number.

51545205576 is an abundant number, since it is smaller than the sum of its proper divisors (95128168824).

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

51545205576 is a wasteful number, since it uses less digits than its factorization.

51545205576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820427 (or 5820417 counting only the distinct ones).

The product of its (nonzero) digits is 1050000, while the sum is 45.

The spelling of 51545205576 in words is "fifty-one billion, five hundred forty-five million, two hundred five thousand, five hundred seventy-six".