66564363001 has 2 divisors, whose sum is σ = 66564363002. Its totient is φ = 66564363000.

The previous prime is 66564362989. The next prime is 66564363007. The reversal of 66564363001 is 10036346566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59682001401 + 6882361600 = 244299^2 + 82960^2 .

It is a cyclic number.

It is not a de Polignac number, because 66564363001 - 2⁷ = 66564362873 is a prime.

It is not a weakly prime, because it can be changed into another prime (66564363007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33282181500 + 33282181501.

It is an arithmetic number, because the mean of its divisors is an integer number (33282181501).

Almost surely, 2^66564363001 is an apocalyptic number.

It is an amenable number.

66564363001 is a deficient number, since it is larger than the sum of its proper divisors (1).

66564363001 is an equidigital number, since it uses as much as digits as its factorization.

66564363001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 66564363001 in words is "sixty-six billion, five hundred sixty-four million, three hundred sixty-three thousand, one".