12739953836389 has 16 divisors (see below), whose sum is σ = 13770909275760. Its totient is φ = 11716347225600.

The previous prime is 12739953836381. The next prime is 12739953836419. The reversal of 12739953836389 is 98363835993721.

It can be written as a sum of positive squares in 8 ways, for example, as 23719080100 + 12716234756289 = 154010^2 + 3565983^2 .

It is a cyclic number.

It is not a de Polignac number, because 12739953836389 - 2³ = 12739953836381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739953836381) 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, 2998689 + ... + 5871289.

It is an arithmetic number, because the mean of its divisors is an integer number (860681829735).

Almost surely, 2^{12739953836389} is an apocalyptic number.

It is an amenable number.

12739953836389 is a deficient number, since it is larger than the sum of its proper divisors (1030955439371).

12739953836389 is a wasteful number, since it uses less digits than its factorization.

12739953836389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873880.

The product of its digits is 1587237120, while the sum is 76.

The spelling of 12739953836389 in words is "twelve trillion, seven hundred thirty-nine billion, nine hundred fifty-three million, eight hundred thirty-six thousand, three hundred eighty-nine".