20344234344 has 384 divisors, whose sum is σ = 67134873600. Its totient is φ = 5093383680.

The previous prime is 20344234343. The next prime is 20344234403. The reversal of 20344234344 is 44343244302.

It is a super-2 number, since 2×20344234344² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20344234343) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15930634 + ... + 15931910.

It is an arithmetic number, because the mean of its divisors is an integer number (174830400).

Almost surely, 2^20344234344 is an apocalyptic number.

20344234344 is a gapful number since it is divisible by the number (24) 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 20344234344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33567436800).

20344234344 is an abundant number, since it is smaller than the sum of its proper divisors (46790639256).

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

20344234344 is a wasteful number, since it uses less digits than its factorization.

20344234344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 33.

Adding to 20344234344 its reverse (44343244302), we get a palindrome (64687478646).

The spelling of 20344234344 in words is "twenty billion, three hundred forty-four million, two hundred thirty-four thousand, three hundred forty-four".