12644251070467 has 2 divisors, whose sum is σ = 12644251070468. Its totient is φ = 12644251070466.

The previous prime is 12644251070449. The next prime is 12644251070509. The reversal of 12644251070467 is 76407015244621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12644251070467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12644251070467.

It is not a weakly prime, because it can be changed into another prime (12644254070467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6322125535233 + 6322125535234.

It is an arithmetic number, because the mean of its divisors is an integer number (6322125535234).

Almost surely, 2^{12644251070467} is an apocalyptic number.

12644251070467 is a deficient number, since it is larger than the sum of its proper divisors (1).

12644251070467 is an equidigital number, since it uses as much as digits as its factorization.

12644251070467 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 12644251070467 in words is "twelve trillion, six hundred forty-four billion, two hundred fifty-one million, seventy thousand, four hundred sixty-seven".