12165723830 has 32 divisors (see below), whose sum is σ = 24131235744. Its totient is φ = 4387493376.

The previous prime is 12165723761. The next prime is 12165723847. The reversal of 12165723830 is 3832756121.

12165723830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1082579 + ... + 1093758.

It is an arithmetic number, because the mean of its divisors is an integer number (754101117).

Almost surely, 2^12165723830 is an apocalyptic number.

12165723830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12165723830 is a deficient number, since it is larger than the sum of its proper divisors (11965511914).

12165723830 is a wasteful number, since it uses less digits than its factorization.

12165723830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176400.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 12165723830 in words is "twelve billion, one hundred sixty-five million, seven hundred twenty-three thousand, eight hundred thirty".