64221606208 has 28 divisors (see below), whose sum is σ = 127452729600. Its totient is φ = 32107532672.

The previous prime is 64221606179. The next prime is 64221606221. The reversal of 64221606208 is 80260612246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658593 + ... + 749791.

It is an arithmetic number, because the mean of its divisors is an integer number (4551883200).

Almost surely, 2^64221606208 is an apocalyptic number.

It is an amenable number.

64221606208 is a deficient number, since it is larger than the sum of its proper divisors (63231123392).

64221606208 is a wasteful number, since it uses less digits than its factorization.

64221606208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102214 (or 102204 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 64221606208 in words is "sixty-four billion, two hundred twenty-one million, six hundred six thousand, two hundred eight".