12312808551 has 24 divisors (see below), whose sum is σ = 17922106800. Its totient is φ = 8145446400.

The previous prime is 12312808531. The next prime is 12312808559. The reversal of 12312808551 is 15580821321.

12312808551 is a `hidden beast` number, since 1 + 23 + 1 + 2 + 80 + 8 + 551 = 666.

It is not a de Polignac number, because 12312808551 - 2⁷ = 12312808423 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1566391 + ... + 1574231.

It is an arithmetic number, because the mean of its divisors is an integer number (746754450).

Almost surely, 2^12312808551 is an apocalyptic number.

12312808551 is a deficient number, since it is larger than the sum of its proper divisors (5609298249).

12312808551 is a wasteful number, since it uses less digits than its factorization.

12312808551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9167 (or 9164 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 12312808551 in words is "twelve billion, three hundred twelve million, eight hundred eight thousand, five hundred fifty-one".