1264408385143 has 2 divisors, whose sum is σ = 1264408385144. Its totient is φ = 1264408385142.

The previous prime is 1264408385039. The next prime is 1264408385167. The reversal of 1264408385143 is 3415838044621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1264408385143 - 2²⁹ = 1263871514231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264408385183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632204192571 + 632204192572.

It is an arithmetic number, because the mean of its divisors is an integer number (632204192572).

Almost surely, 2^{1264408385143} is an apocalyptic number.

1264408385143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264408385143 is an equidigital number, since it uses as much as digits as its factorization.

1264408385143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 1264408385143 in words is "one trillion, two hundred sixty-four billion, four hundred eight million, three hundred eighty-five thousand, one hundred forty-three".