64204666633 has 2 divisors, whose sum is σ = 64204666634. Its totient is φ = 64204666632.

The previous prime is 64204666579. The next prime is 64204666637. The reversal of 64204666633 is 33666640246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53903837584 + 10300829049 = 232172^2 + 101493^2 .

It is a cyclic number.

It is not a de Polignac number, because 64204666633 - 2²⁹ = 63667795721 is a prime.

It is not a weakly prime, because it can be changed into another prime (64204666637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32102333316 + 32102333317.

It is an arithmetic number, because the mean of its divisors is an integer number (32102333317).

Almost surely, 2^64204666633 is an apocalyptic number.

It is an amenable number.

64204666633 is a deficient number, since it is larger than the sum of its proper divisors (1).

64204666633 is an equidigital number, since it uses as much as digits as its factorization.

64204666633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 46.

The spelling of 64204666633 in words is "sixty-four billion, two hundred four million, six hundred sixty-six thousand, six hundred thirty-three".