979744856872 has 16 divisors (see below), whose sum is σ = 1841648871060. Its totient is φ = 488638491264.

The previous prime is 979744856869. The next prime is 979744856887. The reversal of 979744856872 is 278658447979.

It can be written as a sum of positive squares in 2 ways, for example, as 976313943396 + 3430913476 = 988086^2 + 58574^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154238773 + ... + 154245124.

Almost surely, 2^979744856872 is an apocalyptic number.

It is an amenable number.

979744856872 is a deficient number, since it is larger than the sum of its proper divisors (861904014188).

979744856872 is a wasteful number, since it uses less digits than its factorization.

979744856872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308484300 (or 308484296 counting only the distinct ones).

The product of its digits is 1706987520, while the sum is 76.

The spelling of 979744856872 in words is "nine hundred seventy-nine billion, seven hundred forty-four million, eight hundred fifty-six thousand, eight hundred seventy-two".