20444344305446 has 8 divisors (see below), whose sum is σ = 30666545220240. Its totient is φ = 10222162565368.

The previous prime is 20444344305419. The next prime is 20444344305499. The reversal of 20444344305446 is 64450344344402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20444344305446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1738781 + ... + 6626616.

It is an arithmetic number, because the mean of its divisors is an integer number (3833318152530).

Almost surely, 2^{20444344305446} is an apocalyptic number.

20444344305446 is a deficient number, since it is larger than the sum of its proper divisors (10222200914794).

20444344305446 is a wasteful number, since it uses less digits than its factorization.

20444344305446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9587358.

The product of its (nonzero) digits is 8847360, while the sum is 47.

Adding to 20444344305446 its reverse (64450344344402), we get a palindrome (84894688649848).

The spelling of 20444344305446 in words is "twenty trillion, four hundred forty-four billion, three hundred forty-four million, three hundred five thousand, four hundred forty-six".