64446500564446 has 128 divisors (see below), whose sum is σ = 137510610564096. Its totient is φ = 21801272186880.

The previous prime is 64446500564437. The next prime is 64446500564471.

64446500564446 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57060321 + ... + 58178803.

It is an arithmetic number, because the mean of its divisors is an integer number (1074301645032).

Almost surely, 2^{64446500564446} is an apocalyptic number.

64446500564446 is an abundant number, since it is smaller than the sum of its proper divisors (73064109999650).

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

64446500564446 is a wasteful number, since it uses less digits than its factorization.

64446500564446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120226.

The product of its (nonzero) digits is 132710400, while the sum is 58.

The spelling of 64446500564446 in words is "sixty-four trillion, four hundred forty-six billion, five hundred million, five hundred sixty-four thousand, four hundred forty-six".