66570325201 has 2 divisors, whose sum is σ = 66570325202. Its totient is φ = 66570325200.

The previous prime is 66570325127. The next prime is 66570325219. The reversal of 66570325201 is 10252307566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63616946176 + 2953379025 = 252224^2 + 54345^2 .

It is a cyclic number.

It is not a de Polignac number, because 66570325201 - 2²³ = 66561936593 is a prime.

It is not a weakly prime, because it can be changed into another prime (66570325291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33285162600 + 33285162601.

It is an arithmetic number, because the mean of its divisors is an integer number (33285162601).

Almost surely, 2^66570325201 is an apocalyptic number.

It is an amenable number.

66570325201 is a deficient number, since it is larger than the sum of its proper divisors (1).

66570325201 is an equidigital number, since it uses as much as digits as its factorization.

66570325201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 66570325201 in words is "sixty-six billion, five hundred seventy million, three hundred twenty-five thousand, two hundred one".