12618944320 has 56 divisors (see below), whose sum is σ = 31018203648. Its totient is φ = 4884748800.

The previous prime is 12618944309. The next prime is 12618944333. The reversal of 12618944320 is 2344981621.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626116 + ... + 645955.

Almost surely, 2^12618944320 is an apocalyptic number.

12618944320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12618944320 is an abundant number, since it is smaller than the sum of its proper divisors (18399259328).

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

12618944320 is a wasteful number, since it uses less digits than its factorization.

12618944320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272119 (or 1272109 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 12618944320 in words is "twelve billion, six hundred eighteen million, nine hundred forty-four thousand, three hundred twenty".