78909296031 has 12 divisors (see below), whose sum is σ = 114812067552. Its totient is φ = 52222209696.

The previous prime is 78909296021. The next prime is 78909296033. The reversal of 78909296031 is 13069290987.

78909296031 is a `hidden beast` number, since 7 + 8 + 9 + 0 + 9 + 29 + 603 + 1 = 666.

It is not a de Polignac number, because 78909296031 - 2⁵ = 78909295999 is a prime.

It is a super-2 number, since 2×78909296031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78909296033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31997671 + ... + 32000136.

It is an arithmetic number, because the mean of its divisors is an integer number (9567672296).

Almost surely, 2^78909296031 is an apocalyptic number.

78909296031 is a deficient number, since it is larger than the sum of its proper divisors (35902771521).

78909296031 is a wasteful number, since it uses less digits than its factorization.

78909296031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63997950 (or 63997947 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 78909296031 in words is "seventy-eight billion, nine hundred nine million, two hundred ninety-six thousand, thirty-one".