79964485658 has 24 divisors (see below), whose sum is σ = 127662503004. Its totient is φ = 37557977600.

The previous prime is 79964485639. The next prime is 79964485691. The reversal of 79964485658 is 85658446997.

It can be written as a sum of positive squares in 6 ways, for example, as 55579477009 + 24385008649 = 235753^2 + 156157^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 79964485591 and 79964485600.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168368 + ... + 433908.

Almost surely, 2^79964485658 is an apocalyptic number.

79964485658 is a deficient number, since it is larger than the sum of its proper divisors (47698017346).

79964485658 is a wasteful number, since it uses less digits than its factorization.

79964485658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266098 (or 266081 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 71.

The spelling of 79964485658 in words is "seventy-nine billion, nine hundred sixty-four million, four hundred eighty-five thousand, six hundred fifty-eight".