244544250440 has 128 divisors (see below), whose sum is σ = 650843424000. Its totient is φ = 80911315968.

The previous prime is 244544250427. The next prime is 244544250451. The reversal of 244544250440 is 44052445442.

It is a super-2 number, since 2×244544250440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 244544250394 and 244544250403.

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, 18742559 + ... + 18755601.

It is an arithmetic number, because the mean of its divisors is an integer number (5084714250).

Almost surely, 2^244544250440 is an apocalyptic number.

244544250440 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 244544250440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325421712000).

244544250440 is an abundant number, since it is smaller than the sum of its proper divisors (406299173560).

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

244544250440 is a wasteful number, since it uses less digits than its factorization.

244544250440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15399 (or 15395 counting only the distinct ones).

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

Adding to 244544250440 its reverse (44052445442), we get a palindrome (288596695882).

The spelling of 244544250440 in words is "two hundred forty-four billion, five hundred forty-four million, two hundred fifty thousand, four hundred forty".