64224660509 has 2 divisors, whose sum is σ = 64224660510. Its totient is φ = 64224660508.

The previous prime is 64224660499. The next prime is 64224660589. The reversal of 64224660509 is 90506642246.

64224660509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63934639609 + 290020900 = 252853^2 + 17030^2 .

It is a cyclic number.

It is not a de Polignac number, because 64224660509 - 2²⁴ = 64207883293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64224660509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64224660589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32112330254 + 32112330255.

It is an arithmetic number, because the mean of its divisors is an integer number (32112330255).

Almost surely, 2^64224660509 is an apocalyptic number.

It is an amenable number.

64224660509 is a deficient number, since it is larger than the sum of its proper divisors (1).

64224660509 is an equidigital number, since it uses as much as digits as its factorization.

64224660509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 64224660509 in words is "sixty-four billion, two hundred twenty-four million, six hundred sixty thousand, five hundred nine".