979657655685 has 24 divisors (see below), whose sum is σ = 1591196344416. Its totient is φ = 514685777760.

The previous prime is 979657655677. The next prime is 979657655687. The reversal of 979657655685 is 586556756979.

It is not a de Polignac number, because 979657655685 - 2³ = 979657655677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 979657655685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979657655687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7207171 + ... + 7341840.

It is an arithmetic number, because the mean of its divisors is an integer number (66299847684).

Almost surely, 2^979657655685 is an apocalyptic number.

It is an amenable number.

979657655685 is a deficient number, since it is larger than the sum of its proper divisors (611538688731).

979657655685 is a wasteful number, since it uses less digits than its factorization.

979657655685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14549153 (or 14549086 counting only the distinct ones).

The product of its digits is 4286520000, while the sum is 78.

The spelling of 979657655685 in words is "nine hundred seventy-nine billion, six hundred fifty-seven million, six hundred fifty-five thousand, six hundred eighty-five".