12626554444 has 48 divisors (see below), whose sum is σ = 26365667328. Its totient is φ = 5173236288.

The previous prime is 12626554387. The next prime is 12626554453. The reversal of 12626554444 is 44445562621.

It is a super-2 number, since 2×12626554444² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12626554444.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1468542 + ... + 1477114.

It is an arithmetic number, because the mean of its divisors is an integer number (549284736).

Almost surely, 2^12626554444 is an apocalyptic number.

12626554444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12626554444 is an abundant number, since it is smaller than the sum of its proper divisors (13739112884).

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

12626554444 is a wasteful number, since it uses less digits than its factorization.

12626554444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10894 (or 10892 counting only the distinct ones).

The product of its digits is 921600, while the sum is 43.

The spelling of 12626554444 in words is "twelve billion, six hundred twenty-six million, five hundred fifty-four thousand, four hundred forty-four".