122510728764 has 36 divisors (see below), whose sum is σ = 309692043024. Its totient is φ = 40835308032.

The previous prime is 122510728763. The next prime is 122510728789. The reversal of 122510728764 is 467827015221.

122510728764 is a `hidden beast` number, since 1 + 2 + 2 + 510 + 72 + 8 + 7 + 64 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122510728763) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1186204 + ... + 1285340.

Almost surely, 2^122510728764 is an apocalyptic number.

It is an amenable number.

122510728764 is an abundant number, since it is smaller than the sum of its proper divisors (187181314260).

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

122510728764 is a wasteful number, since it uses less digits than its factorization.

122510728764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133474 (or 133469 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 122510728764 in words is "one hundred twenty-two billion, five hundred ten million, seven hundred twenty-eight thousand, seven hundred sixty-four".