79131039546 has 32 divisors (see below), whose sum is σ = 173651869440. Its totient is φ = 23888614464.

The previous prime is 79131039529. The next prime is 79131039593. The reversal of 79131039546 is 64593013197.

It is a super-2 number, since 2×79131039546² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 79131039495 and 79131039504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9566626 + ... + 9574893.

It is an arithmetic number, because the mean of its divisors is an integer number (5426620920).

Almost surely, 2^79131039546 is an apocalyptic number.

79131039546 is an abundant number, since it is smaller than the sum of its proper divisors (94520829894).

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

79131039546 is a wasteful number, since it uses less digits than its factorization.

79131039546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19141590.

The product of its (nonzero) digits is 612360, while the sum is 48.

The spelling of 79131039546 in words is "seventy-nine billion, one hundred thirty-one million, thirty-nine thousand, five hundred forty-six".