12447572844 has 48 divisors (see below), whose sum is σ = 33498080000. Its totient is φ = 3523818816.

The previous prime is 12447572843. The next prime is 12447572861. The reversal of 12447572844 is 44827574421.

It is a junction number, because it is equal to n+sod(n) for n = 12447572793 and 12447572802.

It is not an unprimeable number, because it can be changed into a prime (12447572843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670594 + ... + 688905.

Almost surely, 2^12447572844 is an apocalyptic number.

12447572844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12447572844 is an abundant number, since it is smaller than the sum of its proper divisors (21050507156).

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

12447572844 is a wasteful number, since it uses less digits than its factorization.

12447572844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359622 (or 1359620 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 48.

The spelling of 12447572844 in words is "twelve billion, four hundred forty-seven million, five hundred seventy-two thousand, eight hundred forty-four".