50571156816 has 80 divisors (see below), whose sum is σ = 145184814720. Its totient is φ = 16853932800.

The previous prime is 50571156787. The next prime is 50571156833. The reversal of 50571156816 is 61865117505.

It is a happy number.

50571156816 is a `hidden beast` number, since 5 + 0 + 5 + 71 + 1 + 568 + 16 = 666.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4449541 + ... + 4460891.

It is an arithmetic number, because the mean of its divisors is an integer number (1814810184).

Almost surely, 2^50571156816 is an apocalyptic number.

It is an amenable number.

50571156816 is an abundant number, since it is smaller than the sum of its proper divisors (94613657904).

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

50571156816 is a wasteful number, since it uses less digits than its factorization.

50571156816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21681 (or 21669 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 45.

The spelling of 50571156816 in words is "fifty billion, five hundred seventy-one million, one hundred fifty-six thousand, eight hundred sixteen".