6466636562201 has 2 divisors, whose sum is σ = 6466636562202. Its totient is φ = 6466636562200.

The previous prime is 6466636562189. The next prime is 6466636562203. The reversal of 6466636562201 is 1022656366646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3612736518400 + 2853900043801 = 1900720^2 + 1689349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6466636562201 is a prime.

Together with 6466636562203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6466636562203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3233318281100 + 3233318281101.

It is an arithmetic number, because the mean of its divisors is an integer number (3233318281101).

Almost surely, 2^{6466636562201} is an apocalyptic number.

It is an amenable number.

6466636562201 is a deficient number, since it is larger than the sum of its proper divisors (1).

6466636562201 is an equidigital number, since it uses as much as digits as its factorization.

6466636562201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 53.

The spelling of 6466636562201 in words is "six trillion, four hundred sixty-six billion, six hundred thirty-six million, five hundred sixty-two thousand, two hundred one".