12923449806451 has 2 divisors, whose sum is σ = 12923449806452. Its totient is φ = 12923449806450.

The previous prime is 12923449806389. The next prime is 12923449806461. The reversal of 12923449806451 is 15460894432921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12923449806451 - 2⁹ = 12923449805939 is a prime.

It is a super-2 number, since 2×12923449806451² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12923449806461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6461724903225 + 6461724903226.

It is an arithmetic number, because the mean of its divisors is an integer number (6461724903226).

Almost surely, 2^{12923449806451} is an apocalyptic number.

12923449806451 is a deficient number, since it is larger than the sum of its proper divisors (1).

12923449806451 is an equidigital number, since it uses as much as digits as its factorization.

12923449806451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 58.

The spelling of 12923449806451 in words is "twelve trillion, nine hundred twenty-three billion, four hundred forty-nine million, eight hundred six thousand, four hundred fifty-one".