12731207862089 has 4 divisors (see below), whose sum is σ = 13041725127060. Its totient is φ = 12420690597120.

The previous prime is 12731207862083. The next prime is 12731207862097. The reversal of 12731207862089 is 98026870213721.

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 1519961039689 + 11211246822400 = 1232867^2 + 3348320^2 .

It is a cyclic number.

It is not a de Polignac number, because 12731207862089 - 2²⁰ = 12731206813513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12731207862083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155258632424 + ... + 155258632505.

It is an arithmetic number, because the mean of its divisors is an integer number (3260431281765).

Almost surely, 2^{12731207862089} is an apocalyptic number.

It is an amenable number.

12731207862089 is a deficient number, since it is larger than the sum of its proper divisors (310517264971).

12731207862089 is an equidigital number, since it uses as much as digits as its factorization.

12731207862089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310517264970.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 12731207862089 in words is "twelve trillion, seven hundred thirty-one billion, two hundred seven million, eight hundred sixty-two thousand, eighty-nine".