66264643301 has 2 divisors, whose sum is σ = 66264643302. Its totient is φ = 66264643300.

The previous prime is 66264643297. The next prime is 66264643321. The reversal of 66264643301 is 10334646266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59304912676 + 6959730625 = 243526^2 + 83425^2 .

It is a cyclic number.

It is not a de Polignac number, because 66264643301 - 2² = 66264643297 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66264643321) 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, 33132321650 + 33132321651.

It is an arithmetic number, because the mean of its divisors is an integer number (33132321651).

Almost surely, 2^66264643301 is an apocalyptic number.

It is an amenable number.

66264643301 is a deficient number, since it is larger than the sum of its proper divisors (1).

66264643301 is an equidigital number, since it uses as much as digits as its factorization.

66264643301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 66264643301 in words is "sixty-six billion, two hundred sixty-four million, six hundred forty-three thousand, three hundred one".