979531895579 has 4 divisors (see below), whose sum is σ = 988686399384. Its totient is φ = 970377391776.

The previous prime is 979531895569. The next prime is 979531895591. The reversal of 979531895579 is 975598135979.

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 979531895579 - 2²⁰ = 979530847003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979531895569) by changing a digit.

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, 4577251742 + ... + 4577251955.

It is an arithmetic number, because the mean of its divisors is an integer number (247171599846).

Almost surely, 2^979531895579 is an apocalyptic number.

979531895579 is a deficient number, since it is larger than the sum of its proper divisors (9154503805).

979531895579 is a wasteful number, since it uses less digits than its factorization.

979531895579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9154503804.

The product of its digits is 964467000, while the sum is 77.

The spelling of 979531895579 in words is "nine hundred seventy-nine billion, five hundred thirty-one million, eight hundred ninety-five thousand, five hundred seventy-nine".