16500112531 has 12 divisors (see below), whose sum is σ = 19712804272. Its totient is φ = 13528039536.

The previous prime is 16500112493. The next prime is 16500112549. The reversal of 16500112531 is 13521100561.

It is a happy number.

It is not a de Polignac number, because 16500112531 - 2⁹ = 16500112019 is a prime.

It is a super-3 number, since 3×16500112531³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 16500112496 and 16500112505.

It is not an unprimeable number, because it can be changed into a prime (16500112561) 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 11 ways as a sum of consecutive naturals, for example, 2224236 + ... + 2231641.

Almost surely, 2^16500112531 is an apocalyptic number.

16500112531 is a deficient number, since it is larger than the sum of its proper divisors (3212691741).

16500112531 is an equidigital number, since it uses as much as digits as its factorization.

16500112531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455930 (or 4455907 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The spelling of 16500112531 in words is "sixteen billion, five hundred million, one hundred twelve thousand, five hundred thirty-one".