36585383921 has 2 divisors, whose sum is σ = 36585383922. Its totient is φ = 36585383920.

The previous prime is 36585383909. The next prime is 36585383929. The reversal of 36585383921 is 12938358563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18431863696 + 18153520225 = 135764^2 + 134735^2 .

It is a cyclic number.

It is not a de Polignac number, because 36585383921 - 2¹⁸ = 36585121777 is a prime.

It is not a weakly prime, because it can be changed into another prime (36585383929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18292691960 + 18292691961.

It is an arithmetic number, because the mean of its divisors is an integer number (18292691961).

Almost surely, 2^36585383921 is an apocalyptic number.

It is an amenable number.

36585383921 is a deficient number, since it is larger than the sum of its proper divisors (1).

36585383921 is an equidigital number, since it uses as much as digits as its factorization.

36585383921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 53.

The spelling of 36585383921 in words is "thirty-six billion, five hundred eighty-five million, three hundred eighty-three thousand, nine hundred twenty-one".