1265839083199 has 2 divisors, whose sum is σ = 1265839083200. Its totient is φ = 1265839083198.

The previous prime is 1265839083193. The next prime is 1265839083209. The reversal of 1265839083199 is 9913809385621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1265839083199 - 2³ = 1265839083191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1265839083199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265839083191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632919541599 + 632919541600.

It is an arithmetic number, because the mean of its divisors is an integer number (632919541600).

Almost surely, 2^{1265839083199} is an apocalyptic number.

1265839083199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265839083199 is an equidigital number, since it uses as much as digits as its factorization.

1265839083199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25194240, while the sum is 64.

The spelling of 1265839083199 in words is "one trillion, two hundred sixty-five billion, eight hundred thirty-nine million, eighty-three thousand, one hundred ninety-nine".