12131492798989 has 4 divisors (see below), whose sum is σ = 12251606589180. Its totient is φ = 12011379008800.

The previous prime is 12131492798987. The next prime is 12131492799119. The reversal of 12131492798989 is 98989729413121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11780031162025 + 351461636964 = 3432205^2 + 592842^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131492798989 - 2¹ = 12131492798987 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 (12131492798987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60056894944 + ... + 60056895145.

It is an arithmetic number, because the mean of its divisors is an integer number (3062901647295).

Almost surely, 2^{12131492798989} is an apocalyptic number.

It is an amenable number.

12131492798989 is a deficient number, since it is larger than the sum of its proper divisors (120113790191).

12131492798989 is a wasteful number, since it uses less digits than its factorization.

12131492798989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120113790190.

The product of its digits is 141087744, while the sum is 73.

The spelling of 12131492798989 in words is "twelve trillion, one hundred thirty-one billion, four hundred ninety-two million, seven hundred ninety-eight thousand, nine hundred eighty-nine".