79057454864 has 20 divisors (see below), whose sum is σ = 153663201756. Its totient is φ = 39402435072.

The previous prime is 79057454783. The next prime is 79057454867. The reversal of 79057454864 is 46845475097.

It can be written as a sum of positive squares in 2 ways, for example, as 38648414464 + 40409040400 = 196592^2 + 201020^2 .

It is not an unprimeable number, because it can be changed into a prime (79057454867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7888109 + ... + 7898124.

Almost surely, 2^79057454864 is an apocalyptic number.

It is an amenable number.

79057454864 is a deficient number, since it is larger than the sum of its proper divisors (74605746892).

79057454864 is a wasteful number, since it uses less digits than its factorization.

79057454864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15786554 (or 15786548 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 59.

The spelling of 79057454864 in words is "seventy-nine billion, fifty-seven million, four hundred fifty-four thousand, eight hundred sixty-four".