36687873389 has 4 divisors (see below), whose sum is σ = 36805087356. Its totient is φ = 36570659424.

The previous prime is 36687873361. The next prime is 36687873401. The reversal of 36687873389 is 98337878663.

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 18749824900 + 17938048489 = 136930^2 + 133933^2 .

It is a cyclic number.

It is not a de Polignac number, because 36687873389 - 2²⁰ = 36686824813 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 (36687873329) 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, 58606514 + ... + 58607139.

It is an arithmetic number, because the mean of its divisors is an integer number (9201271839).

Almost surely, 2^36687873389 is an apocalyptic number.

It is an amenable number.

36687873389 is a deficient number, since it is larger than the sum of its proper divisors (117213967).

36687873389 is a wasteful number, since it uses less digits than its factorization.

36687873389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117213966.

The product of its digits is 219469824, while the sum is 68.

The spelling of 36687873389 in words is "thirty-six billion, six hundred eighty-seven million, eight hundred seventy-three thousand, three hundred eighty-nine".