12556616430 has 32 divisors (see below), whose sum is σ = 30352694400. Its totient is φ = 3324340512.

The previous prime is 12556616419. The next prime is 12556616437. The reversal of 12556616430 is 3461665521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12556616437) 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, 1501420 + ... + 1509759.

It is an arithmetic number, because the mean of its divisors is an integer number (948521700).

Almost surely, 2^12556616430 is an apocalyptic number.

12556616430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12556616430 is an abundant number, since it is smaller than the sum of its proper divisors (17796077970).

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

12556616430 is a wasteful number, since it uses less digits than its factorization.

12556616430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011328.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 12556616430 in words is "twelve billion, five hundred fifty-six million, six hundred sixteen thousand, four hundred thirty".