20244251144 has 32 divisors (see below), whose sum is σ = 41337135000. Its totient is φ = 9238513152.

The previous prime is 20244251141. The next prime is 20244251179. The reversal of 20244251144 is 44115244202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10891427044 + 9352824100 = 104362^2 + 96710^2 .

It is not an unprimeable number, because it can be changed into a prime (20244251141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084319 + ... + 1102830.

Almost surely, 2^20244251144 is an apocalyptic number.

It is an amenable number.

20244251144 is an abundant number, since it is smaller than the sum of its proper divisors (21092883856).

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

20244251144 is a wasteful number, since it uses less digits than its factorization.

20244251144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187257 (or 2187253 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 20244251144 its reverse (44115244202), we get a palindrome (64359495346).

The spelling of 20244251144 in words is "twenty billion, two hundred forty-four million, two hundred fifty-one thousand, one hundred forty-four".