16161125231 has 2 divisors, whose sum is σ = 16161125232. Its totient is φ = 16161125230.

The previous prime is 16161125213. The next prime is 16161125273. The reversal of 16161125231 is 13252116161.

Together with previous prime (16161125213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16161125231 - 2¹⁸ = 16160863087 is a prime.

It is a super-2 number, since 2×16161125231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16161125194 and 16161125203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16161125731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080562615 + 8080562616.

It is an arithmetic number, because the mean of its divisors is an integer number (8080562616).

Almost surely, 2^16161125231 is an apocalyptic number.

16161125231 is a deficient number, since it is larger than the sum of its proper divisors (1).

16161125231 is an equidigital number, since it uses as much as digits as its factorization.

16161125231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The spelling of 16161125231 in words is "sixteen billion, one hundred sixty-one million, one hundred twenty-five thousand, two hundred thirty-one".