12179123990 has 64 divisors (see below), whose sum is σ = 25327987200. Its totient is φ = 4172931840.

The previous prime is 12179123953. The next prime is 12179123993. The reversal of 12179123990 is 9932197121.

It is a super-2 number, since 2×12179123990² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12179123993) 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, 133586 + ... + 205434.

It is an arithmetic number, because the mean of its divisors is an integer number (395749800).

Almost surely, 2^12179123990 is an apocalyptic number.

12179123990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12179123990 is an abundant number, since it is smaller than the sum of its proper divisors (13148863210).

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

12179123990 is a wasteful number, since it uses less digits than its factorization.

12179123990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71957.

The product of its (nonzero) digits is 61236, while the sum is 44.

The spelling of 12179123990 in words is "twelve billion, one hundred seventy-nine million, one hundred twenty-three thousand, nine hundred ninety".