12312808552 has 64 divisors (see below), whose sum is σ = 26710093440. Its totient is φ = 5258956800.

The previous prime is 12312808531. The next prime is 12312808559. The reversal of 12312808552 is 25580821321.

It is not an unprimeable number, because it can be changed into a prime (12312808559) 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, 961552 + ... + 974272.

It is an arithmetic number, because the mean of its divisors is an integer number (417345210).

Almost surely, 2^12312808552 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 12312808552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13355046720).

12312808552 is an abundant number, since it is smaller than the sum of its proper divisors (14397284888).

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

12312808552 is a wasteful number, since it uses less digits than its factorization.

12312808552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13402 (or 13398 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 12312808552 in words is "twelve billion, three hundred twelve million, eight hundred eight thousand, five hundred fifty-two".