12624644540 has 12 divisors (see below), whose sum is σ = 26511753576. Its totient is φ = 5049857808.

The previous prime is 12624644491. The next prime is 12624644579. The reversal of 12624644540 is 4544642621.

It is a super-2 number, since 2×12624644540² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12624644494 and 12624644503.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 315616094 + ... + 315616133.

It is an arithmetic number, because the mean of its divisors is an integer number (2209312798).

Almost surely, 2^12624644540 is an apocalyptic number.

12624644540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12624644540 is an abundant number, since it is smaller than the sum of its proper divisors (13887109036).

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

12624644540 is a wasteful number, since it uses less digits than its factorization.

12624644540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631232236 (or 631232234 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 38.

The spelling of 12624644540 in words is "twelve billion, six hundred twenty-four million, six hundred forty-four thousand, five hundred forty".