165565116136615 has 8 divisors (see below), whose sum is σ = 213961073161248. Its totient is φ = 122263470377760.

The previous prime is 165565116136613. The next prime is 165565116136633. The reversal of 165565116136615 is 516631611565561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165565116136615 - 2¹ = 165565116136613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165565116136615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165565116136613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1273577816371 + ... + 1273577816500.

It is an arithmetic number, because the mean of its divisors is an integer number (26745134145156).

Almost surely, 2^{165565116136615} is an apocalyptic number.

165565116136615 is a deficient number, since it is larger than the sum of its proper divisors (48395957024633).

165565116136615 is a wasteful number, since it uses less digits than its factorization.

165565116136615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547155632889.

The product of its digits is 14580000, while the sum is 58.

The spelling of 165565116136615 in words is "one hundred sixty-five trillion, five hundred sixty-five billion, one hundred sixteen million, one hundred thirty-six thousand, six hundred fifteen".