16536660187 has 2 divisors, whose sum is σ = 16536660188. Its totient is φ = 16536660186.

The previous prime is 16536660097. The next prime is 16536660247. The reversal of 16536660187 is 78106663561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16536660187 is a prime.

It is a super-2 number, since 2×16536660187² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16536660187.

It is not a weakly prime, because it can be changed into another prime (16536660587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8268330093 + 8268330094.

It is an arithmetic number, because the mean of its divisors is an integer number (8268330094).

Almost surely, 2^16536660187 is an apocalyptic number.

16536660187 is a deficient number, since it is larger than the sum of its proper divisors (1).

16536660187 is an equidigital number, since it uses as much as digits as its factorization.

16536660187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 16536660187 in words is "sixteen billion, five hundred thirty-six million, six hundred sixty thousand, one hundred eighty-seven".