16836868687 has 16 divisors (see below), whose sum is σ = 17665959168. Its totient is φ = 16016045760.

The previous prime is 16836868679. The next prime is 16836868721. The reversal of 16836868687 is 78686863861.

It is a cyclic number.

It is not a de Polignac number, because 16836868687 - 2³ = 16836868679 is a prime.

It is a super-2 number, since 2×16836868687² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16836868627) 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, 6274048 + ... + 6276730.

It is an arithmetic number, because the mean of its divisors is an integer number (1104122448).

Almost surely, 2^16836868687 is an apocalyptic number.

16836868687 is a deficient number, since it is larger than the sum of its proper divisors (829090481).

16836868687 is a wasteful number, since it uses less digits than its factorization.

16836868687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110.

The product of its digits is 111476736, while the sum is 67.

The spelling of 16836868687 in words is "sixteen billion, eight hundred thirty-six million, eight hundred sixty-eight thousand, six hundred eighty-seven".