12440322990 has 48 divisors (see below), whose sum is σ = 32708286000. Its totient is φ = 3280142976.

The previous prime is 12440322989. The next prime is 12440323057. The reversal of 12440322990 is 9922304421.

12440322990 is a `hidden beast` number, since 1 + 24 + 403 + 229 + 9 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 768540 + ... + 784559.

It is an arithmetic number, because the mean of its divisors is an integer number (681422625).

Almost surely, 2^12440322990 is an apocalyptic number.

12440322990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12440322990 is an abundant number, since it is smaller than the sum of its proper divisors (20267963010).

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

12440322990 is a wasteful number, since it uses less digits than its factorization.

12440322990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553201 (or 1553198 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 12440322990 in words is "twelve billion, four hundred forty million, three hundred twenty-two thousand, nine hundred ninety".