12165678670 has 16 divisors (see below), whose sum is σ = 22432325328. Its totient is φ = 4747581760.

The previous prime is 12165678661. The next prime is 12165678683. The reversal of 12165678670 is 7687656121.

It is a happy number.

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, 14835784 + ... + 14836603.

It is an arithmetic number, because the mean of its divisors is an integer number (1402020333).

Almost surely, 2^12165678670 is an apocalyptic number.

12165678670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12165678670 is a deficient number, since it is larger than the sum of its proper divisors (10266646658).

12165678670 is a wasteful number, since it uses less digits than its factorization.

12165678670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29672435.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 12165678670 in words is "twelve billion, one hundred sixty-five million, six hundred seventy-eight thousand, six hundred seventy".