36031993021 has 2 divisors, whose sum is σ = 36031993022. Its totient is φ = 36031993020.

The previous prime is 36031993001. The next prime is 36031993027. The reversal of 36031993021 is 12039913063.

36031993021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34082328996 + 1949664025 = 184614^2 + 44155^2 .

It is a cyclic number.

It is not a de Polignac number, because 36031993021 - 2³³ = 27442058429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36031993027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18015996510 + 18015996511.

It is an arithmetic number, because the mean of its divisors is an integer number (18015996511).

Almost surely, 2^36031993021 is an apocalyptic number.

It is an amenable number.

36031993021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36031993021 is an equidigital number, since it uses as much as digits as its factorization.

36031993021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 37.

The spelling of 36031993021 in words is "thirty-six billion, thirty-one million, nine hundred ninety-three thousand, twenty-one".