1265868902939 has 2 divisors, whose sum is σ = 1265868902940. Its totient is φ = 1265868902938.

The previous prime is 1265868902917. The next prime is 1265868902941. The reversal of 1265868902939 is 9392098685621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1265868902939 - 2²⁴ = 1265852125723 is a prime.

Together with 1265868902941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1265868907939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632934451469 + 632934451470.

It is an arithmetic number, because the mean of its divisors is an integer number (632934451470).

Almost surely, 2^{1265868902939} is an apocalyptic number.

1265868902939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265868902939 is an equidigital number, since it uses as much as digits as its factorization.

1265868902939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100776960, while the sum is 68.

The spelling of 1265868902939 in words is "one trillion, two hundred sixty-five billion, eight hundred sixty-eight million, nine hundred two thousand, nine hundred thirty-nine".