64444244446 has 4 divisors (see below), whose sum is σ = 96666366672. Its totient is φ = 32222122222.

The previous prime is 64444244443. The next prime is 64444244461.

64444244446 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 64444244396 and 64444244405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64444244443) by changing a digit.

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 as a sum of consecutive naturals, namely, 16111061110 + ... + 16111061113.

It is an arithmetic number, because the mean of its divisors is an integer number (24166591668).

Almost surely, 2^64444244446 is an apocalyptic number.

64444244446 is a deficient number, since it is larger than the sum of its proper divisors (32222122226).

64444244446 is a wasteful number, since it uses less digits than its factorization.

64444244446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32222122225.

The product of its digits is 4718592, while the sum is 46.

The spelling of 64444244446 in words is "sixty-four billion, four hundred forty-four million, two hundred forty-four thousand, four hundred forty-six".