244155223340 has 144 divisors (see below), whose sum is σ = 616680993600. Its totient is φ = 80899499520.

The previous prime is 244155223261. The next prime is 244155223343. The reversal of 244155223340 is 43322551442.

It is a happy number.

It is a super-2 number, since 2×244155223340² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 244155223340.

It is not an unprimeable number, because it can be changed into a prime (244155223343) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 5380145 + ... + 5425335.

It is an arithmetic number, because the mean of its divisors is an integer number (4282506900).

Almost surely, 2^244155223340 is an apocalyptic number.

244155223340 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 244155223340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308340496800).

244155223340 is an abundant number, since it is smaller than the sum of its proper divisors (372525770260).

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

244155223340 is a wasteful number, since it uses less digits than its factorization.

244155223340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45400 (or 45391 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 244155223340 its reverse (43322551442), we get a palindrome (287477774782).

The spelling of 244155223340 in words is "two hundred forty-four billion, one hundred fifty-five million, two hundred twenty-three thousand, three hundred forty".