12897365319 has 32 divisors (see below), whose sum is σ = 20214080000. Its totient is φ = 8104707072.

The previous prime is 12897365309. The next prime is 12897365323. The reversal of 12897365319 is 91356379821.

12897365319 is a `hidden beast` number, since 12 + 8 + 97 + 3 + 6 + 531 + 9 = 666.

It is not a de Polignac number, because 12897365319 - 2⁴ = 12897365303 is a prime.

It is a super-2 number, since 2×12897365319² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897365309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38919 + ... + 165255.

It is an arithmetic number, because the mean of its divisors is an integer number (631690000).

Almost surely, 2^12897365319 is an apocalyptic number.

12897365319 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12897365319 is a deficient number, since it is larger than the sum of its proper divisors (7316714681).

12897365319 is a wasteful number, since it uses less digits than its factorization.

12897365319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126564 (or 126558 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The spelling of 12897365319 in words is "twelve billion, eight hundred ninety-seven million, three hundred sixty-five thousand, three hundred nineteen".