79178964481 has 16 divisors (see below), whose sum is σ = 83247930304. Its totient is φ = 75213157824.

The previous prime is 79178964439. The next prime is 79178964511. The reversal of 79178964481 is 18446987197.

It is a cyclic number.

It is not a de Polignac number, because 79178964481 - 2³¹ = 77031480833 is a prime.

It is a super-2 number, since 2×79178964481² (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 (79178964401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3914911 + ... + 3935083.

It is an arithmetic number, because the mean of its divisors is an integer number (5202995644).

Almost surely, 2^79178964481 is an apocalyptic number.

It is an amenable number.

79178964481 is a deficient number, since it is larger than the sum of its proper divisors (4068965823).

79178964481 is a wasteful number, since it uses less digits than its factorization.

79178964481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22720.

The product of its digits is 24385536, while the sum is 64.

The spelling of 79178964481 in words is "seventy-nine billion, one hundred seventy-eight million, nine hundred sixty-four thousand, four hundred eighty-one".