77976412131 has 8 divisors (see below), whose sum is σ = 103969921104. Its totient is φ = 51983588960.

The previous prime is 77976412109. The next prime is 77976412139. The reversal of 77976412131 is 13121467977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77976412131 - 2⁵ = 77976412099 is a prime.

It is a super-2 number, since 2×77976412131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77976412139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224461 + ... + 454241.

It is an arithmetic number, because the mean of its divisors is an integer number (12996240138).

Almost surely, 2^77976412131 is an apocalyptic number.

77976412131 is a deficient number, since it is larger than the sum of its proper divisors (25993508973).

77976412131 is a wasteful number, since it uses less digits than its factorization.

77976412131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342901.

The product of its digits is 444528, while the sum is 48.

The spelling of 77976412131 in words is "seventy-seven billion, nine hundred seventy-six million, four hundred twelve thousand, one hundred thirty-one".