12555715116 has 72 divisors (see below), whose sum is σ = 34131219696. Its totient is φ = 3581934720.

The previous prime is 12555715091. The next prime is 12555715121. The reversal of 12555715116 is 61151755521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 382306 + ... + 413846.

It is an arithmetic number, because the mean of its divisors is an integer number (474044718).

Almost surely, 2^12555715116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12555715116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17065609848).

12555715116 is an abundant number, since it is smaller than the sum of its proper divisors (21575504580).

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

12555715116 is a wasteful number, since it uses less digits than its factorization.

12555715116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32239 (or 32230 counting only the distinct ones).

The product of its digits is 52500, while the sum is 39.

The spelling of 12555715116 in words is "twelve billion, five hundred fifty-five million, seven hundred fifteen thousand, one hundred sixteen".