12365665262166 has 16 divisors (see below), whose sum is σ = 24731375666544. Its totient is φ = 4121880897024.

The previous prime is 12365665262147. The next prime is 12365665262183. The reversal of 12365665262166 is 66126256656321.

It is a super-2 number, since 2×12365665262166² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2445690 + ... + 5541906.

It is an arithmetic number, because the mean of its divisors is an integer number (1545710979159).

Almost surely, 2^{12365665262166} is an apocalyptic number.

12365665262166 is an abundant number, since it is smaller than the sum of its proper divisors (12365710404378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12365665262166 is a wasteful number, since it uses less digits than its factorization.

12365665262166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3761855.

The product of its digits is 27993600, while the sum is 57.

The spelling of 12365665262166 in words is "twelve trillion, three hundred sixty-five billion, six hundred sixty-five million, two hundred sixty-two thousand, one hundred sixty-six".