16277957231 has 4 divisors (see below), whose sum is σ = 16345500864. Its totient is φ = 16210413600.

The previous prime is 16277957219. The next prime is 16277957239. The reversal of 16277957231 is 13275977261.

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 16277957231 - 2³⁰ = 15204215407 is a prime.

It is a super-2 number, since 2×16277957231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16277957231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16277957239) 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, 33771455 + ... + 33771936.

It is an arithmetic number, because the mean of its divisors is an integer number (4086375216).

Almost surely, 2^16277957231 is an apocalyptic number.

16277957231 is a deficient number, since it is larger than the sum of its proper divisors (67543633).

16277957231 is an equidigital number, since it uses as much as digits as its factorization.

16277957231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67543632.

The product of its digits is 1111320, while the sum is 50.

The spelling of 16277957231 in words is "sixteen billion, two hundred seventy-seven million, nine hundred fifty-seven thousand, two hundred thirty-one".