16611687807 has 64 divisors (see below), whose sum is σ = 26909245440. Its totient is φ = 8977161600.

The previous prime is 16611687733. The next prime is 16611687817. The reversal of 16611687807 is 70878611661.

It is not a de Polignac number, because 16611687807 - 2¹⁰ = 16611686783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16611687807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16611687817) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12593494 + ... + 12594812.

It is an arithmetic number, because the mean of its divisors is an integer number (420456960).

Almost surely, 2^16611687807 is an apocalyptic number.

16611687807 is a deficient number, since it is larger than the sum of its proper divisors (10297557633).

16611687807 is a wasteful number, since it uses less digits than its factorization.

16611687807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324.

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 16611687807 in words is "sixteen billion, six hundred eleven million, six hundred eighty-seven thousand, eight hundred seven".