16696776156865 has 64 divisors (see below), whose sum is σ = 24270436270080. Its totient is φ = 10764615859200.

The previous prime is 16696776156859. The next prime is 16696776156881. The reversal of 16696776156865 is 56865167769661.

It is not a de Polignac number, because 16696776156865 - 2³ = 16696776156857 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 3550237104 + ... + 3550241806.

It is an arithmetic number, because the mean of its divisors is an integer number (379225566720).

Almost surely, 2^{16696776156865} is an apocalyptic number.

It is an amenable number.

16696776156865 is a deficient number, since it is larger than the sum of its proper divisors (7573660113215).

16696776156865 is a wasteful number, since it uses less digits than its factorization.

16696776156865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9622.

The product of its digits is 4115059200, while the sum is 79.

The spelling of 16696776156865 in words is "sixteen trillion, six hundred ninety-six billion, seven hundred seventy-six million, one hundred fifty-six thousand, eight hundred sixty-five".