78692249120 has 24 divisors (see below), whose sum is σ = 185910438924. Its totient is φ = 31476899584.

The previous prime is 78692249089. The next prime is 78692249177. The reversal of 78692249120 is 2194229687.

It can be written as a sum of positive squares in 2 ways, for example, as 73053440656 + 5638808464 = 270284^2 + 75092^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245913119 + ... + 245913438.

Almost surely, 2^78692249120 is an apocalyptic number.

It is an amenable number.

78692249120 is an abundant number, since it is smaller than the sum of its proper divisors (107218189804).

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

78692249120 is a wasteful number, since it uses less digits than its factorization.

78692249120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491826572 (or 491826564 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 78692249120 in words is "seventy-eight billion, six hundred ninety-two million, two hundred forty-nine thousand, one hundred twenty".