64226308509 has 20 divisors (see below), whose sum is σ = 104665096800. Its totient is φ = 38925034920.

The previous prime is 64226308507. The next prime is 64226308537. The reversal of 64226308509 is 90580362246.

64226308509 is a `hidden beast` number, since 6 + 4 + 2 + 2 + 630 + 8 + 5 + 0 + 9 = 666.

It is not a de Polignac number, because 64226308509 - 2¹ = 64226308507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64226308501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36040809 + ... + 36042590.

It is an arithmetic number, because the mean of its divisors is an integer number (5233254840).

Almost surely, 2^64226308509 is an apocalyptic number.

It is an amenable number.

64226308509 is a deficient number, since it is larger than the sum of its proper divisors (40438788291).

64226308509 is a wasteful number, since it uses less digits than its factorization.

64226308509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72083422 (or 72083413 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 64226308509 in words is "sixty-four billion, two hundred twenty-six million, three hundred eight thousand, five hundred nine".