244444420140 has 96 divisors (see below), whose sum is σ = 693174392064. Its totient is φ = 64358810880.

The previous prime is 244444420133. The next prime is 244444420159. The reversal of 244444420140 is 41024444442.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 1469487 + ... + 1627353.

It is an arithmetic number, because the mean of its divisors is an integer number (7220566584).

Almost surely, 2^244444420140 is an apocalyptic number.

244444420140 is a gapful number since it is divisible by the number (20) 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 244444420140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346587196032).

244444420140 is an abundant number, since it is smaller than the sum of its proper divisors (448729971924).

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

244444420140 is a wasteful number, since it uses less digits than its factorization.

244444420140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158207 (or 158205 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 244444420140 its reverse (41024444442), we get a palindrome (285468864582).

The spelling of 244444420140 in words is "two hundred forty-four billion, four hundred forty-four million, four hundred twenty thousand, one hundred forty".