78597993131 has 8 divisors (see below), whose sum is σ = 89884130784. Its totient is φ = 67326318720.

The previous prime is 78597993113. The next prime is 78597993163. The reversal of 78597993131 is 13139979587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78597993131 is a prime.

It is a super-2 number, since 2×78597993131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78597993181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3604160 + ... + 3625901.

It is an arithmetic number, because the mean of its divisors is an integer number (11235516348).

Almost surely, 2^78597993131 is an apocalyptic number.

78597993131 is a deficient number, since it is larger than the sum of its proper divisors (11286137653).

78597993131 is a wasteful number, since it uses less digits than its factorization.

78597993131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7231621.

The product of its digits is 12859560, while the sum is 62.

The spelling of 78597993131 in words is "seventy-eight billion, five hundred ninety-seven million, nine hundred ninety-three thousand, one hundred thirty-one".