20440152244 has 12 divisors (see below), whose sum is σ = 37003724100. Its totient is φ = 9867659648.

The previous prime is 20440152223. The next prime is 20440152263. The reversal of 20440152244 is 44225104402.

It can be written as a sum of positive squares in 2 ways, for example, as 11143335844 + 9296816400 = 105562^2 + 96420^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 88103989 + ... + 88104220.

It is an arithmetic number, because the mean of its divisors is an integer number (3083643675).

Almost surely, 2^20440152244 is an apocalyptic number.

It is an amenable number.

20440152244 is a deficient number, since it is larger than the sum of its proper divisors (16563571856).

20440152244 is a wasteful number, since it uses less digits than its factorization.

20440152244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176208242 (or 176208240 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

Adding to 20440152244 its reverse (44225104402), we get a palindrome (64665256646).

The spelling of 20440152244 in words is "twenty billion, four hundred forty million, one hundred fifty-two thousand, two hundred forty-four".