131289977579 has 4 divisors (see below), whose sum is σ = 131291056776. Its totient is φ = 131288898384.

The previous prime is 131289977551. The next prime is 131289977593. The reversal of 131289977579 is 975779982131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 131289977579 - 2²⁰ = 131288929003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131289977509) 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, 329969 + ... + 609474.

It is an arithmetic number, because the mean of its divisors is an integer number (32822764194).

Almost surely, 2^131289977579 is an apocalyptic number.

131289977579 is a deficient number, since it is larger than the sum of its proper divisors (1079197).

131289977579 is an equidigital number, since it uses as much as digits as its factorization.

131289977579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079196.

The product of its digits is 60011280, while the sum is 68.

The spelling of 131289977579 in words is "one hundred thirty-one billion, two hundred eighty-nine million, nine hundred seventy-seven thousand, five hundred seventy-nine".