64426444622 has 16 divisors (see below), whose sum is σ = 97210368000. Its totient is φ = 32023272600.

The previous prime is 64426444619. The next prime is 64426444639. The reversal of 64426444622 is 22644462446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387779 + ... + 528417.

It is an arithmetic number, because the mean of its divisors is an integer number (6075648000).

Almost surely, 2^64426444622 is an apocalyptic number.

64426444622 is a deficient number, since it is larger than the sum of its proper divisors (32783923378).

64426444622 is a wasteful number, since it uses less digits than its factorization.

64426444622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141991.

The product of its digits is 1769472, while the sum is 44.

It can be divided in two parts, 644264 and 44622, that added together give a palindrome (688886).

The spelling of 64426444622 in words is "sixty-four billion, four hundred twenty-six million, four hundred forty-four thousand, six hundred twenty-two".