2051244144 has 120 divisors (see below), whose sum is σ = 6023141280. Its totient is φ = 650428416.

The previous prime is 2051244127. The next prime is 2051244149. The reversal of 2051244144 is 4414421502.

2051244144 is a `hidden beast` number, since 2 + 0 + 512 + 4 + 4 + 144 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051244149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637612 + ... + 640820.

It is an arithmetic number, because the mean of its divisors is an integer number (50192844).

Almost surely, 2^2051244144 is an apocalyptic number.

2051244144 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 2051244144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3011570640).

2051244144 is an abundant number, since it is smaller than the sum of its proper divisors (3971897136).

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

2051244144 is a wasteful number, since it uses less digits than its factorization.

2051244144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439 (or 3430 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 2051244144 is about 45290.6628787877. The cubic root of 2051244144 is about 1270.5910291817.

Adding to 2051244144 its reverse (4414421502), we get a palindrome (6465665646).

The spelling of 2051244144 in words is "two billion, fifty-one million, two hundred forty-four thousand, one hundred forty-four".