44448888888821 has 8 divisors (see below), whose sum is σ = 45005857961400. Its totient is φ = 43895368541632.

The previous prime is 44448888888809. The next prime is 44448888888829. The reversal of 44448888888821 is 12888888884444.

It can be written as a sum of positive squares in 4 ways, for example, as 2642448564721 + 41806440324100 = 1625561^2 + 6465790^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 44448888888821 - 2²² = 44448884694517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44448888888821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44448888888829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862155410 + ... + 862206963.

It is an arithmetic number, because the mean of its divisors is an integer number (5625732245175).

Almost surely, 2^{44448888888821} is an apocalyptic number.

It is an amenable number.

44448888888821 is a deficient number, since it is larger than the sum of its proper divisors (556969072579).

44448888888821 is a wasteful number, since it uses less digits than its factorization.

44448888888821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724362695.

The product of its digits is 8589934592, while the sum is 83.

The spelling of 44448888888821 in words is "forty-four trillion, four hundred forty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred twenty-one".