1296905955839 has 16 divisors (see below), whose sum is σ = 1403417074752. Its totient is φ = 1191368345088.

The previous prime is 1296905955817. The next prime is 1296905955853. The reversal of 1296905955839 is 9385595096921.

It is a cyclic number.

It is not a de Polignac number, because 1296905955839 - 2²⁴ = 1296889178623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296905955859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3146237 + ... + 3534489.

It is an arithmetic number, because the mean of its divisors is an integer number (87713567172).

Almost surely, 2^{1296905955839} is an apocalyptic number.

1296905955839 is a deficient number, since it is larger than the sum of its proper divisors (106511118913).

1296905955839 is a wasteful number, since it uses less digits than its factorization.

1296905955839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389506.

The product of its (nonzero) digits is 236196000, while the sum is 71.

The spelling of 1296905955839 in words is "one trillion, two hundred ninety-six billion, nine hundred five million, nine hundred fifty-five thousand, eight hundred thirty-nine".