979156651979 has 4 divisors (see below), whose sum is σ = 1068170893080. Its totient is φ = 890142410880.

The previous prime is 979156651943. The next prime is 979156651987.

979156651979 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 979156651979 - 2³⁶ = 910437175243 is a prime.

It is a super-2 number, since 2×979156651979² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979156651379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44507120534 + ... + 44507120555.

It is an arithmetic number, because the mean of its divisors is an integer number (267042723270).

Almost surely, 2^979156651979 is an apocalyptic number.

979156651979 is a deficient number, since it is larger than the sum of its proper divisors (89014241101).

979156651979 is a wasteful number, since it uses less digits than its factorization.

979156651979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89014241100.

The product of its digits is 289340100, while the sum is 74.

The spelling of 979156651979 in words is "nine hundred seventy-nine billion, one hundred fifty-six million, six hundred fifty-one thousand, nine hundred seventy-nine".