16154975231 has 4 divisors (see below), whose sum is σ = 16166203200. Its totient is φ = 16143747264.

The previous prime is 16154975191. The next prime is 16154975233. The reversal of 16154975231 is 13257945161.

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 16154975231 - 2¹⁰ = 16154974207 is a prime.

It is a super-2 number, since 2×16154975231² (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 (16154975233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5611826 + ... + 5614703.

It is an arithmetic number, because the mean of its divisors is an integer number (4041550800).

Almost surely, 2^16154975231 is an apocalyptic number.

16154975231 is a deficient number, since it is larger than the sum of its proper divisors (11227969).

16154975231 is a wasteful number, since it uses less digits than its factorization.

16154975231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11227968.

The product of its digits is 226800, while the sum is 44.

The spelling of 16154975231 in words is "sixteen billion, one hundred fifty-four million, nine hundred seventy-five thousand, two hundred thirty-one".