78506631061122 has 64 divisors (see below), whose sum is σ = 171421762176000. Its totient is φ = 23771200783680.

The previous prime is 78506631061109. The next prime is 78506631061193. The reversal of 78506631061122 is 22116013660587.

It is a super-2 number, since 2×78506631061122² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2093100693 + ... + 2093138199.

It is an arithmetic number, because the mean of its divisors is an integer number (2678465034000).

Almost surely, 2^{78506631061122} is an apocalyptic number.

78506631061122 is an abundant number, since it is smaller than the sum of its proper divisors (92915131114878).

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

78506631061122 is a wasteful number, since it uses less digits than its factorization.

78506631061122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61591.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 78506631061122 in words is "seventy-eight trillion, five hundred six billion, six hundred thirty-one million, sixty-one thousand, one hundred twenty-two".