979971378617 has 32 divisors (see below), whose sum is σ = 1242757555200. Its totient is φ = 750613464000.

The previous prime is 979971378613. The next prime is 979971378671. The reversal of 979971378617 is 716873179979.

979971378617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 979971378617 - 2² = 979971378613 is a prime.

It is a super-3 number, since 3×979971378617³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (979971378611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627734 + ... + 1534272.

It is an arithmetic number, because the mean of its divisors is an integer number (38836173600).

Almost surely, 2^979971378617 is an apocalyptic number.

It is an amenable number.

979971378617 is a deficient number, since it is larger than the sum of its proper divisors (262786176583).

979971378617 is a wasteful number, since it uses less digits than its factorization.

979971378617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906797.

The product of its digits is 252047376, while the sum is 74.

The spelling of 979971378617 in words is "nine hundred seventy-nine billion, nine hundred seventy-one million, three hundred seventy-eight thousand, six hundred seventeen".