36155330636021 has 2 divisors, whose sum is σ = 36155330636022. Its totient is φ = 36155330636020.

The previous prime is 36155330636011. The next prime is 36155330636023. The reversal of 36155330636021 is 12063603355163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31230371035396 + 4924959600625 = 5588414^2 + 2219225^2 .

It is a cyclic number.

It is not a de Polignac number, because 36155330636021 - 2²⁶ = 36155263527157 is a prime.

Together with 36155330636023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36155330636023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18077665318010 + 18077665318011.

It is an arithmetic number, because the mean of its divisors is an integer number (18077665318011).

Almost surely, 2^{36155330636021} is an apocalyptic number.

It is an amenable number.

36155330636021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36155330636021 is an equidigital number, since it uses as much as digits as its factorization.

36155330636021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 874800, while the sum is 44.

The spelling of 36155330636021 in words is "thirty-six trillion, one hundred fifty-five billion, three hundred thirty million, six hundred thirty-six thousand, twenty-one".