16945663402315 has 16 divisors (see below), whose sum is σ = 20580302711808. Its totient is φ = 13392867717216.

The previous prime is 16945663402259. The next prime is 16945663402387. The reversal of 16945663402315 is 51320436654961.

It is a cyclic number.

It is not a de Polignac number, because 16945663402315 - 2²¹ = 16945661305163 is a prime.

It is a Duffinian 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, 17023654 + ... + 17991556.

It is an arithmetic number, because the mean of its divisors is an integer number (1286268919488).

Almost surely, 2^{16945663402315} is an apocalyptic number.

16945663402315 is a deficient number, since it is larger than the sum of its proper divisors (3634639309493).

16945663402315 is an equidigital number, since it uses as much as digits as its factorization.

16945663402315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010178.

The product of its (nonzero) digits is 13996800, while the sum is 55.

The spelling of 16945663402315 in words is "sixteen trillion, nine hundred forty-five billion, six hundred sixty-three million, four hundred two thousand, three hundred fifteen".