16680870854615 has 16 divisors (see below), whose sum is σ = 22017245626656. Its totient is φ = 12131542434880.

The previous prime is 16680870854563. The next prime is 16680870854629. The reversal of 16680870854615 is 51645807808661.

It is not a de Polignac number, because 16680870854615 - 2¹⁴ = 16680870838231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1253251862 + ... + 1253265171.

It is an arithmetic number, because the mean of its divisors is an integer number (1376077851666).

Almost surely, 2^{16680870854615} is an apocalyptic number.

16680870854615 is a deficient number, since it is larger than the sum of its proper divisors (5336374772041).

16680870854615 is an equidigital number, since it uses as much as digits as its factorization.

16680870854615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506517071 (or 2506517049 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 65.

The spelling of 16680870854615 in words is "sixteen trillion, six hundred eighty billion, eight hundred seventy million, eight hundred fifty-four thousand, six hundred fifteen".