64244244666 has 48 divisors (see below), whose sum is σ = 150061857120. Its totient is φ = 18282348000.

The previous prime is 64244244629. The next prime is 64244244671. The reversal of 64244244666 is 66644244246.

64244244666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 361501 + ... + 509088.

It is an arithmetic number, because the mean of its divisors is an integer number (3126288690).

Almost surely, 2^64244244666 is an apocalyptic number.

64244244666 is an abundant number, since it is smaller than the sum of its proper divisors (85817612454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64244244666 is a wasteful number, since it uses less digits than its factorization.

64244244666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870859 (or 870852 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 48.

The spelling of 64244244666 in words is "sixty-four billion, two hundred forty-four million, two hundred forty-four thousand, six hundred sixty-six".