64440233204446 has 32 divisors (see below), whose sum is σ = 108947497621248. Its totient is φ = 28332063325440.

The previous prime is 64440233204437. The next prime is 64440233204507.

64440233204446 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64440233204396 and 64440233204405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330575571 + ... + 330770446.

It is an arithmetic number, because the mean of its divisors is an integer number (3404609300664).

Almost surely, 2^{64440233204446} is an apocalyptic number.

64440233204446 is a deficient number, since it is larger than the sum of its proper divisors (44507264416802).

64440233204446 is a wasteful number, since it uses less digits than its factorization.

64440233204446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661346176.

The product of its (nonzero) digits is 5308416, while the sum is 46.

It can be divided in two parts, 6444023 and 3204446, that added together give a palindrome (9648469).

The spelling of 64440233204446 in words is "sixty-four trillion, four hundred forty billion, two hundred thirty-three million, two hundred four thousand, four hundred forty-six".