64815338659 has 2 divisors, whose sum is σ = 64815338660. Its totient is φ = 64815338658.

The previous prime is 64815338641. The next prime is 64815338663. The reversal of 64815338659 is 95683351846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64815338659 - 2²³ = 64806950051 is a prime.

It is not a weakly prime, because it can be changed into another prime (64815338629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32407669329 + 32407669330.

It is an arithmetic number, because the mean of its divisors is an integer number (32407669330).

Almost surely, 2^64815338659 is an apocalyptic number.

64815338659 is a deficient number, since it is larger than the sum of its proper divisors (1).

64815338659 is an equidigital number, since it uses as much as digits as its factorization.

64815338659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18662400, while the sum is 58.

The spelling of 64815338659 in words is "sixty-four billion, eight hundred fifteen million, three hundred thirty-eight thousand, six hundred fifty-nine".