50511561164 has 24 divisors (see below), whose sum is σ = 88562046720. Its totient is φ = 25208167824.

The previous prime is 50511561143. The next prime is 50511561197. The reversal of 50511561164 is 46116511505.

It is a happy number.

It is a super-2 number, since 2×50511561164² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 5118467 + ... + 5128325.

It is an arithmetic number, because the mean of its divisors is an integer number (3690085280).

Almost surely, 2^50511561164 is an apocalyptic number.

It is an amenable number.

50511561164 is a deficient number, since it is larger than the sum of its proper divisors (38050485556).

50511561164 is a wasteful number, since it uses less digits than its factorization.

50511561164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12149 (or 12147 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 50511561164 in words is "fifty billion, five hundred eleven million, five hundred sixty-one thousand, one hundred sixty-four".