64644303304 has 24 divisors (see below), whose sum is σ = 140997141990. Its totient is φ = 27704701248.

The previous prime is 64644303293. The next prime is 64644303329. The reversal of 64644303304 is 40330344646.

It can be written as a sum of positive squares in only one way, i.e., 45839666404 + 18804636900 = 214102^2 + 137130^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82454077 + ... + 82454860.

Almost surely, 2^64644303304 is an apocalyptic number.

It is an amenable number.

64644303304 is an abundant number, since it is smaller than the sum of its proper divisors (76352838686).

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

64644303304 is a wasteful number, since it uses less digits than its factorization.

64644303304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164908957 (or 164908946 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 37.

The spelling of 64644303304 in words is "sixty-four billion, six hundred forty-four million, three hundred three thousand, three hundred four".