12165612670 has 16 divisors (see below), whose sum is σ = 21900732048. Its totient is φ = 4865660800.

The previous prime is 12165612649. The next prime is 12165612671. The reversal of 12165612670 is 7621656121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165612671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20070 + ... + 157270.

It is an arithmetic number, because the mean of its divisors is an integer number (1368795753).

Almost surely, 2^12165612670 is an apocalyptic number.

12165612670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12165612670 is a deficient number, since it is larger than the sum of its proper divisors (9735119378).

12165612670 is a wasteful number, since it uses less digits than its factorization.

12165612670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146075.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 12165612670 in words is "twelve billion, one hundred sixty-five million, six hundred twelve thousand, six hundred seventy".