64866669353 has 2 divisors, whose sum is σ = 64866669354. Its totient is φ = 64866669352.

The previous prime is 64866669319. The next prime is 64866669359. The reversal of 64866669353 is 35396666846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60306098329 + 4560571024 = 245573^2 + 67532^2 .

It is a cyclic number.

It is not a de Polignac number, because 64866669353 - 2¹⁰ = 64866668329 is a prime.

It is not a weakly prime, because it can be changed into another prime (64866669359) 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, 32433334676 + 32433334677.

It is an arithmetic number, because the mean of its divisors is an integer number (32433334677).

Almost surely, 2^64866669353 is an apocalyptic number.

It is an amenable number.

64866669353 is a deficient number, since it is larger than the sum of its proper divisors (1).

64866669353 is an equidigital number, since it uses as much as digits as its factorization.

64866669353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100776960, while the sum is 62.

The spelling of 64866669353 in words is "sixty-four billion, eight hundred sixty-six million, six hundred sixty-nine thousand, three hundred fifty-three".