20244151144 has 64 divisors (see below), whose sum is σ = 44490902400. Its totient is φ = 8454451200.

The previous prime is 20244151129. The next prime is 20244151183. The reversal of 20244151144 is 44115144202.

It is a happy number.

It is a super-2 number, since 2×20244151144² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2128239 + ... + 2137729.

It is an arithmetic number, because the mean of its divisors is an integer number (695170350).

Almost surely, 2^20244151144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20244151144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22245451200).

20244151144 is an abundant number, since it is smaller than the sum of its proper divisors (24246751256).

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

20244151144 is a wasteful number, since it uses less digits than its factorization.

20244151144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10474 (or 10470 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 20244151144 its reverse (44115144202), we get a palindrome (64359295346).

The spelling of 20244151144 in words is "twenty billion, two hundred forty-four million, one hundred fifty-one thousand, one hundred forty-four".