51571778796 has 36 divisors (see below), whose sum is σ = 136029911472. Its totient is φ = 16443175584.

The previous prime is 51571778789. The next prime is 51571778807. The reversal of 51571778796 is 69787717515.

51571778796 is a `hidden beast` number, since 51 + 571 + 7 + 7 + 8 + 7 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31141551 + ... + 31143206.

It is an arithmetic number, because the mean of its divisors is an integer number (3778608652).

Almost surely, 2^51571778796 is an apocalyptic number.

It is an amenable number.

51571778796 is an abundant number, since it is smaller than the sum of its proper divisors (84458132676).

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

51571778796 is a wasteful number, since it uses less digits than its factorization.

51571778796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62284790 (or 62284785 counting only the distinct ones).

The product of its digits is 25930800, while the sum is 63.

The spelling of 51571778796 in words is "fifty-one billion, five hundred seventy-one million, seven hundred seventy-eight thousand, seven hundred ninety-six".