13665165670 has 64 divisors (see below), whose sum is σ = 26896665600. Its totient is φ = 4968576000.

The previous prime is 13665165659. The next prime is 13665165677. The reversal of 13665165670 is 7656156631.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 13665165670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13665165677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2505106 + ... + 2510554.

It is an arithmetic number, because the mean of its divisors is an integer number (420260400).

Almost surely, 2^13665165670 is an apocalyptic number.

13665165670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13665165670 is a deficient number, since it is larger than the sum of its proper divisors (13231499930).

13665165670 is a wasteful number, since it uses less digits than its factorization.

13665165670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5761.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 13665165670 in words is "thirteen billion, six hundred sixty-five million, one hundred sixty-five thousand, six hundred seventy".