16886947830681 has 16 divisors (see below), whose sum is σ = 23888173320000. Its totient is φ = 10574498024448.

The previous prime is 16886947830677. The next prime is 16886947830721. The reversal of 16886947830681 is 18603874968861.

It is not a de Polignac number, because 16886947830681 - 2² = 16886947830677 is a prime.

It is a super-2 number, since 2×16886947830681² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16886947830611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331754736 + ... + 331805633.

It is an arithmetic number, because the mean of its divisors is an integer number (1493010832500).

Almost surely, 2^{16886947830681} is an apocalyptic number.

It is an amenable number.

16886947830681 is a deficient number, since it is larger than the sum of its proper divisors (7001225489319).

16886947830681 is a wasteful number, since it uses less digits than its factorization.

16886947830681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663560888.

The product of its (nonzero) digits is 668860416, while the sum is 75.

The spelling of 16886947830681 in words is "sixteen trillion, eight hundred eighty-six billion, nine hundred forty-seven million, eight hundred thirty thousand, six hundred eighty-one".