16500116015 has 4 divisors (see below), whose sum is σ = 19800139224. Its totient is φ = 13200092808.

The previous prime is 16500115991. The next prime is 16500116077. The reversal of 16500116015 is 51061100561.

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 16500116015 - 2¹⁸ = 16499853871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1650011597 + ... + 1650011606.

It is an arithmetic number, because the mean of its divisors is an integer number (4950034806).

Almost surely, 2^16500116015 is an apocalyptic number.

16500116015 is a deficient number, since it is larger than the sum of its proper divisors (3300023209).

16500116015 is an equidigital number, since it uses as much as digits as its factorization.

16500116015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300023208.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 16500116015 its reverse (51061100561), we get a palindrome (67561216576).

The spelling of 16500116015 in words is "sixteen billion, five hundred million, one hundred sixteen thousand, fifteen".