12923449806399 has 64 divisors (see below), whose sum is σ = 19311491888640. Its totient is φ = 7619447808000.

The previous prime is 12923449806389. The next prime is 12923449806451. The reversal of 12923449806399 is 99360894432921.

It is a Cunningham number, because it is equal to 3594920²-1.

It is not a de Polignac number, because 12923449806399 - 2⁵ = 12923449806367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12923449806349) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1513457472 + ... + 1513466010.

It is an arithmetic number, because the mean of its divisors is an integer number (301742060760).

Almost surely, 2^{12923449806399} is an apocalyptic number.

12923449806399 is a deficient number, since it is larger than the sum of its proper divisors (6388042082241).

12923449806399 is a wasteful number, since it uses less digits than its factorization.

12923449806399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11672.

The product of its (nonzero) digits is 181398528, while the sum is 69.

The spelling of 12923449806399 in words is "twelve trillion, nine hundred twenty-three billion, four hundred forty-nine million, eight hundred six thousand, three hundred ninety-nine".