122919937578 has 96 divisors (see below), whose sum is σ = 278321883840. Its totient is φ = 39174347520.

The previous prime is 122919937561. The next prime is 122919937663. The reversal of 122919937578 is 875739919221.

122919937578 is a `hidden beast` number, since 1 + 2 + 2 + 9 + 199 + 375 + 78 = 666.

It is a super-2 number, since 2×122919937578² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 9734553 + ... + 9747171.

It is an arithmetic number, because the mean of its divisors is an integer number (2899186290).

Almost surely, 2^122919937578 is an apocalyptic number.

122919937578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

122919937578 is an abundant number, since it is smaller than the sum of its proper divisors (155401946262).

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

122919937578 is a wasteful number, since it uses less digits than its factorization.

122919937578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12932 (or 12929 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 63.

The spelling of 122919937578 in words is "one hundred twenty-two billion, nine hundred nineteen million, nine hundred thirty-seven thousand, five hundred seventy-eight".