64445817382 has 16 divisors (see below), whose sum is σ = 96857384400. Its totient is φ = 32160085920.

The previous prime is 64445817347. The next prime is 64445817383. The reversal of 64445817382 is 28371854446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64445817383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2163832 + ... + 2193412.

It is an arithmetic number, because the mean of its divisors is an integer number (6053586525).

Almost surely, 2^64445817382 is an apocalyptic number.

64445817382 is a deficient number, since it is larger than the sum of its proper divisors (32411567018).

64445817382 is a wasteful number, since it uses less digits than its factorization.

64445817382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31671.

The product of its digits is 5160960, while the sum is 52.

The spelling of 64445817382 in words is "sixty-four billion, four hundred forty-five million, eight hundred seventeen thousand, three hundred eighty-two".