64443344334446 has 32 divisors (see below), whose sum is σ = 123456872528640. Its totient is φ = 24495411211200.

The previous prime is 64443344334389. The next prime is 64443344334491.

It is a happy number.

64443344334446 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64443344334391 and 64443344334400.

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, 5103204356 + ... + 5103216983.

It is an arithmetic number, because the mean of its divisors is an integer number (3858027266520).

Almost surely, 2^{64443344334446} is an apocalyptic number.

64443344334446 is a deficient number, since it is larger than the sum of its proper divisors (59013528194194).

64443344334446 is a wasteful number, since it uses less digits than its factorization.

64443344334446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10206421400.

The product of its digits is 191102976, while the sum is 56.

The spelling of 64443344334446 in words is "sixty-four trillion, four hundred forty-three billion, three hundred forty-four million, three hundred thirty-four thousand, four hundred forty-six".