12640044180 has 48 divisors (see below), whose sum is σ = 35469645120. Its totient is φ = 3363295488.

The previous prime is 12640044173. The next prime is 12640044199. The reversal of 12640044180 is 8144004621.

12640044180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 203070 + ... + 257909.

It is an arithmetic number, because the mean of its divisors is an integer number (738950940).

Almost surely, 2^12640044180 is an apocalyptic number.

12640044180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12640044180 is an abundant number, since it is smaller than the sum of its proper divisors (22829600940).

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

12640044180 is a wasteful number, since it uses less digits than its factorization.

12640044180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461448 (or 461446 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 12640044180 in words is "twelve billion, six hundred forty million, forty-four thousand, one hundred eighty".