16660106519 has 4 divisors (see below), whose sum is σ = 19040121744. Its totient is φ = 14280091296.

The previous prime is 16660106503. The next prime is 16660106563. The reversal of 16660106519 is 91560106661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16660106519 - 2⁴ = 16660106503 is a prime.

It is a super-2 number, since 2×16660106519² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660106579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190007602 + ... + 1190007615.

It is an arithmetic number, because the mean of its divisors is an integer number (4760030436).

Almost surely, 2^16660106519 is an apocalyptic number.

16660106519 is a deficient number, since it is larger than the sum of its proper divisors (2380015225).

16660106519 is an equidigital number, since it uses as much as digits as its factorization.

16660106519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380015224.

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 16660106519 in words is "sixteen billion, six hundred sixty million, one hundred six thousand, five hundred nineteen".