36681593813 has 2 divisors, whose sum is σ = 36681593814. Its totient is φ = 36681593812.

The previous prime is 36681593791. The next prime is 36681593827. The reversal of 36681593813 is 31839518663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27003362929 + 9678230884 = 164327^2 + 98378^2 .

It is an emirp because it is prime and its reverse (31839518663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36681593813 - 2²² = 36677399509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36681593843) 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 as a sum of consecutive naturals, namely, 18340796906 + 18340796907.

It is an arithmetic number, because the mean of its divisors is an integer number (18340796907).

Almost surely, 2^36681593813 is an apocalyptic number.

It is an amenable number.

36681593813 is a deficient number, since it is larger than the sum of its proper divisors (1).

36681593813 is an equidigital number, since it uses as much as digits as its factorization.

36681593813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 53.

The spelling of 36681593813 in words is "thirty-six billion, six hundred eighty-one million, five hundred ninety-three thousand, eight hundred thirteen".