444455311553 has 12 divisors (see below), whose sum is σ = 492048172560. Its totient is φ = 401143431480.

The previous prime is 444455311549. The next prime is 444455311571. The reversal of 444455311553 is 355113554444.

It is not a de Polignac number, because 444455311553 - 2² = 444455311549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444455311253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13196075 + ... + 13229712.

It is an arithmetic number, because the mean of its divisors is an integer number (41004014380).

Almost surely, 2^444455311553 is an apocalyptic number.

It is an amenable number.

444455311553 is a deficient number, since it is larger than the sum of its proper divisors (47592861007).

444455311553 is a wasteful number, since it uses less digits than its factorization.

444455311553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26425948 (or 26425937 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 44.

Adding to 444455311553 its reverse (355113554444), we get a palindrome (799568865997).

The spelling of 444455311553 in words is "four hundred forty-four billion, four hundred fifty-five million, three hundred eleven thousand, five hundred fifty-three".