165655660115 has 64 divisors (see below), whose sum is σ = 239770782720. Its totient is φ = 108381757440.

The previous prime is 165655660067. The next prime is 165655660117. The reversal of 165655660115 is 511066556561.

It is a de Polignac number, because none of the positive numbers 2^k-165655660115 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165655660115.

It is not an unprimeable number, because it can be changed into a prime (165655660117) 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, 57180347 + ... + 57183243.

It is an arithmetic number, because the mean of its divisors is an integer number (3746418480).

Almost surely, 2^165655660115 is an apocalyptic number.

165655660115 is a deficient number, since it is larger than the sum of its proper divisors (74115122605).

165655660115 is a wasteful number, since it uses less digits than its factorization.

165655660115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5612.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 165655660115 in words is "one hundred sixty-five billion, six hundred fifty-five million, six hundred sixty thousand, one hundred fifteen".