979895598978 has 32 divisors (see below), whose sum is σ = 2009917711872. Its totient is φ = 318295913600.

The previous prime is 979895598853. The next prime is 979895598991. The reversal of 979895598978 is 879895598979.

It is a junction number, because it is equal to n+sod(n) for n = 979895598891 and 979895598900.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2095533 + ... + 2520128.

It is an arithmetic number, because the mean of its divisors is an integer number (62809928496).

Almost surely, 2^979895598978 is an apocalyptic number.

979895598978 is an abundant number, since it is smaller than the sum of its proper divisors (1030022112894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

979895598978 is a wasteful number, since it uses less digits than its factorization.

979895598978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4616570.

The product of its digits is 37035532800, while the sum is 93.

Subtracting from 979895598978 its reverse (879895598979), we obtain a palindrome (99999999999).

The spelling of 979895598978 in words is "nine hundred seventy-nine billion, eight hundred ninety-five million, five hundred ninety-eight thousand, nine hundred seventy-eight".