12544683456 has 28 divisors (see below), whose sum is σ = 33191142152. Its totient is φ = 4181561088.

The previous prime is 12544683421. The next prime is 12544683457. The reversal of 12544683456 is 65438644521.

It is a super-2 number, since 2×12544683456² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12544683457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32668255 + ... + 32668638.

It is an arithmetic number, because the mean of its divisors is an integer number (1185397934).

Almost surely, 2^12544683456 is an apocalyptic number.

12544683456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12544683456 is an abundant number, since it is smaller than the sum of its proper divisors (20646458696).

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

12544683456 is an equidigital number, since it uses as much as digits as its factorization.

12544683456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65336908 (or 65336898 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 48.

The spelling of 12544683456 in words is "twelve billion, five hundred forty-four million, six hundred eighty-three thousand, four hundred fifty-six".