36570422316721 has 2 divisors, whose sum is σ = 36570422316722. Its totient is φ = 36570422316720.

The previous prime is 36570422316709. The next prime is 36570422316737. The reversal of 36570422316721 is 12761322407563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20876345836096 + 15694076480625 = 4569064^2 + 3961575^2 .

It is a cyclic number.

It is not a de Polignac number, because 36570422316721 - 2⁴⁵ = 1386050227889 is a prime.

It is not a weakly prime, because it can be changed into another prime (36570425316721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18285211158360 + 18285211158361.

It is an arithmetic number, because the mean of its divisors is an integer number (18285211158361).

Almost surely, 2^{36570422316721} is an apocalyptic number.

It is an amenable number.

36570422316721 is a deficient number, since it is larger than the sum of its proper divisors (1).

36570422316721 is an equidigital number, since it uses as much as digits as its factorization.

36570422316721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 36570422316721 in words is "thirty-six trillion, five hundred seventy billion, four hundred twenty-two million, three hundred sixteen thousand, seven hundred twenty-one".