12432056640 has 56 divisors (see below), whose sum is σ = 39471782880. Its totient is φ = 3315214848.

The previous prime is 12432056617. The next prime is 12432056641. The reversal of 12432056640 is 4665023421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432056641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6474070 + ... + 6475989.

Almost surely, 2^12432056640 is an apocalyptic number.

12432056640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12432056640 is an abundant number, since it is smaller than the sum of its proper divisors (27039726240).

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

12432056640 is a wasteful number, since it uses less digits than its factorization.

12432056640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12950079 (or 12950069 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 12432056640 in words is "twelve billion, four hundred thirty-two million, fifty-six thousand, six hundred forty".