12165379164 has 36 divisors (see below), whose sum is σ = 30940048776. Its totient is φ = 4030246368.

The previous prime is 12165379133. The next prime is 12165379169. The reversal of 12165379164 is 46197356121.

12165379164 is a `hidden beast` number, since 1 + 21 + 6 + 537 + 91 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165379169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1030719 + ... + 1042454.

Almost surely, 2^12165379164 is an apocalyptic number.

It is an amenable number.

12165379164 is an abundant number, since it is smaller than the sum of its proper divisors (18774669612).

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

12165379164 is a wasteful number, since it uses less digits than its factorization.

12165379164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073346 (or 2073341 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 12165379164 in words is "twelve billion, one hundred sixty-five million, three hundred seventy-nine thousand, one hundred sixty-four".