445222222544 has 80 divisors (see below), whose sum is σ = 954428555520. Its totient is φ = 199501985280.

The previous prime is 445222222519. The next prime is 445222222631.

445222222544 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 445222222498 and 445222222507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9054794 + ... + 9103830.

It is an arithmetic number, because the mean of its divisors is an integer number (11930356944).

Almost surely, 2^445222222544 is an apocalyptic number.

445222222544 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445222222544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477214277760).

445222222544 is an abundant number, since it is smaller than the sum of its proper divisors (509206332976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445222222544 is a wasteful number, since it uses less digits than its factorization.

445222222544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49788 (or 49782 counting only the distinct ones).

The product of its digits is 409600, while the sum is 38.

It can be divided in two parts, 445222 and 222544, that added together give a palindrome (667766).

The spelling of 445222222544 in words is "four hundred forty-five billion, two hundred twenty-two million, two hundred twenty-two thousand, five hundred forty-four".