78910508131 has 32 divisors (see below), whose sum is σ = 97516597248. Its totient is φ = 62180680320.

The previous prime is 78910508129. The next prime is 78910508137. The reversal of 78910508131 is 13180501987.

It is a cyclic number.

It is not a de Polignac number, because 78910508131 - 2¹ = 78910508129 is a prime.

It is a super-2 number, since 2×78910508131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78910508137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31176336 + ... + 31178866.

It is an arithmetic number, because the mean of its divisors is an integer number (3047393664).

Almost surely, 2^78910508131 is an apocalyptic number.

78910508131 is a deficient number, since it is larger than the sum of its proper divisors (18606089117).

78910508131 is a wasteful number, since it uses less digits than its factorization.

78910508131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811.

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 78910508131 in words is "seventy-eight billion, nine hundred ten million, five hundred eight thousand, one hundred thirty-one".