12165678063 has 32 divisors (see below), whose sum is σ = 22470520320. Its totient is φ = 6319831680.

The previous prime is 12165678043. The next prime is 12165678101. The reversal of 12165678063 is 36087656121.

12165678063 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 567 + 80 + 6 + 3 = 666.

It is not a de Polignac number, because 12165678063 - 2⁶ = 12165677999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165678013) 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, 2923770 + ... + 2927927.

It is an arithmetic number, because the mean of its divisors is an integer number (702203760).

Almost surely, 2^12165678063 is an apocalyptic number.

12165678063 is a deficient number, since it is larger than the sum of its proper divisors (10304842257).

12165678063 is a wasteful number, since it uses less digits than its factorization.

12165678063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851724 (or 5851718 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 12165678063 in words is "twelve billion, one hundred sixty-five million, six hundred seventy-eight thousand, sixty-three".