12998137256349 has 32 divisors (see below), whose sum is σ = 20972035420416. Its totient is φ = 6990511180800.

The previous prime is 12998137256243. The next prime is 12998137256353. The reversal of 12998137256349 is 94365273189921.

It is not a de Polignac number, because 12998137256349 - 2⁹ = 12998137255837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12998137256359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40092799 + ... + 40415699.

It is an arithmetic number, because the mean of its divisors is an integer number (655376106888).

Almost surely, 2^{12998137256349} is an apocalyptic number.

It is an amenable number.

12998137256349 is a deficient number, since it is larger than the sum of its proper divisors (7973898164067).

12998137256349 is a wasteful number, since it uses less digits than its factorization.

12998137256349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435685.

The product of its digits is 176359680, while the sum is 69.

The spelling of 12998137256349 in words is "twelve trillion, nine hundred ninety-eight billion, one hundred thirty-seven million, two hundred fifty-six thousand, three hundred forty-nine".