78407913339 has 24 divisors (see below), whose sum is σ = 136247671040. Its totient is φ = 42446388528.

The previous prime is 78407913319. The next prime is 78407913361. The reversal of 78407913339 is 93331970487.

It is a happy number.

78407913339 is a `hidden beast` number, since 78 + 407 + 9 + 133 + 39 = 666.

It is not a de Polignac number, because 78407913339 - 2⁷ = 78407913211 is a prime.

It is a super-2 number, since 2×78407913339² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78407913319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32750647 + ... + 32753040.

Almost surely, 2^78407913339 is an apocalyptic number.

78407913339 is a deficient number, since it is larger than the sum of its proper divisors (57839757701).

78407913339 is a wasteful number, since it uses less digits than its factorization.

78407913339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65503719 (or 65503716 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 78407913339 in words is "seventy-eight billion, four hundred seven million, nine hundred thirteen thousand, three hundred thirty-nine".