12568393391 has 8 divisors (see below), whose sum is σ = 13232580480. Its totient is φ = 11904475608.

The previous prime is 12568393363. The next prime is 12568393393. The reversal of 12568393391 is 19339386521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12568393391 - 2²⁶ = 12501284527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12568393393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32270 + ... + 161796.

It is an arithmetic number, because the mean of its divisors is an integer number (1654072560).

Almost surely, 2^12568393391 is an apocalyptic number.

12568393391 is a deficient number, since it is larger than the sum of its proper divisors (664187089).

12568393391 is a wasteful number, since it uses less digits than its factorization.

12568393391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134653.

The product of its digits is 1049760, while the sum is 50.

The spelling of 12568393391 in words is "twelve billion, five hundred sixty-eight million, three hundred ninety-three thousand, three hundred ninety-one".