12257180844 has 24 divisors (see below), whose sum is σ = 28867382208. Its totient is φ = 4047542160.

The previous prime is 12257180821. The next prime is 12257180869. The reversal of 12257180844 is 44808175221.

It is a junction number, because it is equal to n+sod(n) for n = 12257180796 and 12257180805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4771762 + ... + 4774329.

It is an arithmetic number, because the mean of its divisors is an integer number (1202807592).

Almost surely, 2^12257180844 is an apocalyptic number.

It is an amenable number.

12257180844 is an abundant number, since it is smaller than the sum of its proper divisors (16610201364).

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

12257180844 is a wasteful number, since it uses less digits than its factorization.

12257180844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546205 (or 9546203 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The spelling of 12257180844 in words is "twelve billion, two hundred fifty-seven million, one hundred eighty thousand, eight hundred forty-four".