16163977831 has 2 divisors, whose sum is σ = 16163977832. Its totient is φ = 16163977830.

The previous prime is 16163977829. The next prime is 16163977873. The reversal of 16163977831 is 13877936161.

It is a weak prime.

It is an emirp because it is prime and its reverse (13877936161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16163977831 - 2¹ = 16163977829 is a prime.

It is a super-2 number, since 2×16163977831² (a number of 21 digits) contains 22 as substring.

Together with 16163977829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16163977811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8081988915 + 8081988916.

It is an arithmetic number, because the mean of its divisors is an integer number (8081988916).

Almost surely, 2^16163977831 is an apocalyptic number.

16163977831 is a deficient number, since it is larger than the sum of its proper divisors (1).

16163977831 is an equidigital number, since it uses as much as digits as its factorization.

16163977831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 52.

The spelling of 16163977831 in words is "sixteen billion, one hundred sixty-three million, nine hundred seventy-seven thousand, eight hundred thirty-one".