16500013531 has 8 divisors (see below), whose sum is σ = 17034480000. Its totient is φ = 15965685120.

The previous prime is 16500013529. The next prime is 16500013567. The reversal of 16500013531 is 13531000561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16500013531 - 2¹ = 16500013529 is a prime.

It is a super-2 number, since 2×16500013531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16500013496 and 16500013505.

It is not an unprimeable number, because it can be changed into a prime (16500013511) 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 7 ways as a sum of consecutive naturals, for example, 244245 + ... + 304393.

It is an arithmetic number, because the mean of its divisors is an integer number (2129310000).

Almost surely, 2^16500013531 is an apocalyptic number.

16500013531 is a deficient number, since it is larger than the sum of its proper divisors (534466469).

16500013531 is an equidigital number, since it uses as much as digits as its factorization.

16500013531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69029.

The product of its (nonzero) digits is 1350, while the sum is 25.

The spelling of 16500013531 in words is "sixteen billion, five hundred million, thirteen thousand, five hundred thirty-one".