79121310332112 has 60 divisors (see below), whose sum is σ = 221590118950564. Its totient is φ = 26354672455680.

The previous prime is 79121310332027. The next prime is 79121310332143. The reversal of 79121310332112 is 21123301312197.

79121310332112 is a `hidden beast` number, since 7 + 9 + 1 + 2 + 1 + 310 + 3 + 321 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21155988990096 + 57965321342016 = 4599564^2 + 7613496^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198734353 + ... + 199132080.

Almost surely, 2^{79121310332112} is an apocalyptic number.

79121310332112 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

79121310332112 is an abundant number, since it is smaller than the sum of its proper divisors (142468808618452).

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

79121310332112 is a wasteful number, since it uses less digits than its factorization.

79121310332112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397867828 (or 397867819 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 79121310332112 in words is "seventy-nine trillion, one hundred twenty-one billion, three hundred ten million, three hundred thirty-two thousand, one hundred twelve".