979158977951 has 32 divisors (see below), whose sum is σ = 1228003545600. Its totient is φ = 758470510080.

The previous prime is 979158977939. The next prime is 979158977977. The reversal of 979158977951 is 159779851979.

It is a cyclic number.

It is not a de Polignac number, because 979158977951 - 2⁶ = 979158977887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (77).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979158976951) 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, 11061395 + ... + 11149563.

It is an arithmetic number, because the mean of its divisors is an integer number (38375110800).

Almost surely, 2^979158977951 is an apocalyptic number.

979158977951 is a deficient number, since it is larger than the sum of its proper divisors (248844567649).

979158977951 is a wasteful number, since it uses less digits than its factorization.

979158977951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89039.

The product of its digits is 450084600, while the sum is 77.

The spelling of 979158977951 in words is "nine hundred seventy-nine billion, one hundred fifty-eight million, nine hundred seventy-seven thousand, nine hundred fifty-one".