977992983731 has 8 divisors (see below), whose sum is σ = 1035891466704. Its totient is φ = 920135554560.

The previous prime is 977992983691. The next prime is 977992983743. The reversal of 977992983731 is 137389299779.

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 977992983731 - 2²⁶ = 977925874867 is a prime.

It is a super-2 number, since 2×977992983731² (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 (977992983631) 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, 10214390 + ... + 10309691.

It is an arithmetic number, because the mean of its divisors is an integer number (129486433338).

Almost surely, 2^977992983731 is an apocalyptic number.

977992983731 is a deficient number, since it is larger than the sum of its proper divisors (57898482973).

977992983731 is a wasteful number, since it uses less digits than its factorization.

977992983731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20526901.

The product of its digits is 324060912, while the sum is 74.

The spelling of 977992983731 in words is "nine hundred seventy-seven billion, nine hundred ninety-two million, nine hundred eighty-three thousand, seven hundred thirty-one".