16345186117 has 4 divisors (see below), whose sum is σ = 17602508140. Its totient is φ = 15087864096.

The previous prime is 16345186097. The next prime is 16345186147. The reversal of 16345186117 is 71168154361.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2155373476 + 14189812641 = 46426^2 + 119121^2 .

It is a cyclic number.

It is not a de Polignac number, because 16345186117 - 2²³ = 16336797509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16345186147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628660992 + ... + 628661017.

It is an arithmetic number, because the mean of its divisors is an integer number (4400627035).

Almost surely, 2^16345186117 is an apocalyptic number.

It is an amenable number.

16345186117 is a deficient number, since it is larger than the sum of its proper divisors (1257322023).

16345186117 is a wasteful number, since it uses less digits than its factorization.

16345186117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257322022.

The product of its digits is 120960, while the sum is 43.

The spelling of 16345186117 in words is "sixteen billion, three hundred forty-five million, one hundred eighty-six thousand, one hundred seventeen".