12556451715330 has 16 divisors (see below), whose sum is σ = 30135484116864. Its totient is φ = 3348387124080.

The previous prime is 12556451715293. The next prime is 12556451715341. The reversal of 12556451715330 is 3351715465521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12556451715330.

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 7 ways as a sum of consecutive naturals, for example, 209274195226 + ... + 209274195285.

It is an arithmetic number, because the mean of its divisors is an integer number (1883467757304).

Almost surely, 2^{12556451715330} is an apocalyptic number.

12556451715330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12556451715330 is an abundant number, since it is smaller than the sum of its proper divisors (17579032401534).

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

12556451715330 is a wasteful number, since it uses less digits than its factorization.

12556451715330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418548390521.

The product of its (nonzero) digits is 1890000, while the sum is 48.

The spelling of 12556451715330 in words is "twelve trillion, five hundred fifty-six billion, four hundred fifty-one million, seven hundred fifteen thousand, three hundred thirty".