244201423440 has 160 divisors (see below), whose sum is σ = 817022707200. Its totient is φ = 59980935168.

The previous prime is 244201423429. The next prime is 244201423511. The reversal of 244201423440 is 44324102442.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 244201423398 and 244201423407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1360036 + ... + 1529084.

It is an arithmetic number, because the mean of its divisors is an integer number (5106391920).

Almost surely, 2^244201423440 is an apocalyptic number.

244201423440 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 244201423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408511353600).

244201423440 is an abundant number, since it is smaller than the sum of its proper divisors (572821283760).

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

244201423440 is a wasteful number, since it uses less digits than its factorization.

244201423440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169541 (or 169535 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 244201423440 its reverse (44324102442), we get a palindrome (288525525882).

The spelling of 244201423440 in words is "two hundred forty-four billion, two hundred one million, four hundred twenty-three thousand, four hundred forty".