137043593809 has 4 divisors (see below), whose sum is σ = 137081528116. Its totient is φ = 137005659504.

The previous prime is 137043593801. The next prime is 137043593849. The reversal of 137043593809 is 908395340731.

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 46339020225 + 90704573584 = 215265^2 + 301172^2 .

It is a cyclic number.

It is not a de Polignac number, because 137043593809 - 2³ = 137043593801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137043593801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18961734 + ... + 18968959.

It is an arithmetic number, because the mean of its divisors is an integer number (34270382029).

Almost surely, 2^137043593809 is an apocalyptic number.

It is an amenable number.

137043593809 is a deficient number, since it is larger than the sum of its proper divisors (37934307).

137043593809 is an equidigital number, since it uses as much as digits as its factorization.

137043593809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37934306.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 137043593809 in words is "one hundred thirty-seven billion, forty-three million, five hundred ninety-three thousand, eight hundred nine".