979820671572 has 72 divisors (see below), whose sum is σ = 2594511331776. Its totient is φ = 311190933504.

The previous prime is 979820671567. The next prime is 979820671597. The reversal of 979820671572 is 275176028979.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2089458 + ... + 2515049.

It is an arithmetic number, because the mean of its divisors is an integer number (36034879608).

Almost surely, 2^979820671572 is an apocalyptic number.

979820671572 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

979820671572 is an abundant number, since it is smaller than the sum of its proper divisors (1614690660204).

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

979820671572 is a wasteful number, since it uses less digits than its factorization.

979820671572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604797 (or 4604792 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The spelling of 979820671572 in words is "nine hundred seventy-nine billion, eight hundred twenty million, six hundred seventy-one thousand, five hundred seventy-two".