16139937231 has 24 divisors (see below), whose sum is σ = 26282364080. Its totient is φ = 9781778160.

The previous prime is 16139937181. The next prime is 16139937299. The reversal of 16139937231 is 13273993161.

16139937231 is a `hidden beast` number, since 1 + 613 + 9 + 9 + 3 + 7 + 23 + 1 = 666.

It is not a de Polignac number, because 16139937231 - 2⁷ = 16139937103 is a prime.

It is a super-2 number, since 2×16139937231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16139937431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2466880 + ... + 2473413.

Almost surely, 2^16139937231 is an apocalyptic number.

16139937231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16139937231 is a deficient number, since it is larger than the sum of its proper divisors (10142426849).

16139937231 is a wasteful number, since it uses less digits than its factorization.

16139937231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4940324 (or 4940307 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The spelling of 16139937231 in words is "sixteen billion, one hundred thirty-nine million, nine hundred thirty-seven thousand, two hundred thirty-one".