64446441052 has 12 divisors (see below), whose sum is σ = 128892882160. Its totient is φ = 27619903296.

The previous prime is 64446441047. The next prime is 64446441061. The reversal of 64446441052 is 25014464446.

64446441052 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 64446440996 and 64446441014.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1150829277 + ... + 1150829332.

Almost surely, 2^64446441052 is an apocalyptic number.

It is an amenable number.

64446441052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64446441052 is a wasteful number, since it uses less digits than its factorization.

64446441052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301658620 (or 2301658618 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 40.

The spelling of 64446441052 in words is "sixty-four billion, four hundred forty-six million, four hundred forty-one thousand, fifty-two".