1296586978379 has 16 divisors (see below), whose sum is σ = 1643922743040. Its totient is φ = 993203316960.

The previous prime is 1296586978339. The next prime is 1296586978411. The reversal of 1296586978379 is 9738796856921.

It is a cyclic number.

It is not a de Polignac number, because 1296586978379 - 2⁸ = 1296586978123 is a prime.

It is a super-2 number, since 2×1296586978379² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296586978339) 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, 142697084 + ... + 142706169.

It is an arithmetic number, because the mean of its divisors is an integer number (102745171440).

Almost surely, 2^{1296586978379} is an apocalyptic number.

1296586978379 is a deficient number, since it is larger than the sum of its proper divisors (347335764661).

1296586978379 is a wasteful number, since it uses less digits than its factorization.

1296586978379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285403330.

The product of its digits is 2469035520, while the sum is 80.

The spelling of 1296586978379 in words is "one trillion, two hundred ninety-six billion, five hundred eighty-six million, nine hundred seventy-eight thousand, three hundred seventy-nine".