12645746472 has 32 divisors (see below), whose sum is σ = 32988905280. Its totient is φ = 4031976960.

The previous prime is 12645746437. The next prime is 12645746479. The reversal of 12645746472 is 27464754621.

It is not an unprimeable number, because it can be changed into a prime (12645746479) by changing a digit.

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, 11453929 + ... + 11455032.

It is an arithmetic number, because the mean of its divisors is an integer number (1030903290).

Almost surely, 2^12645746472 is an apocalyptic number.

12645746472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12645746472 is an abundant number, since it is smaller than the sum of its proper divisors (20343158808).

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

12645746472 is a wasteful number, since it uses less digits than its factorization.

12645746472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22908993 (or 22908989 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 48.

The spelling of 12645746472 in words is "twelve billion, six hundred forty-five million, seven hundred forty-six thousand, four hundred seventy-two".