20331304144 has 20 divisors (see below), whose sum is σ = 39397736196. Its totient is φ = 10164146432.

The previous prime is 20331304127. The next prime is 20331304153. The reversal of 20331304144 is 44140313302.

It can be written as a sum of positive squares in 2 ways, for example, as 16348179600 + 3983124544 = 127860^2 + 63112^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21612 + ... + 202804.

Almost surely, 2^20331304144 is an apocalyptic number.

It is an amenable number.

20331304144 is a deficient number, since it is larger than the sum of its proper divisors (19066432052).

20331304144 is a wasteful number, since it uses less digits than its factorization.

20331304144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188214 (or 188208 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20331304144 its reverse (44140313302), we get a palindrome (64471617446).

The spelling of 20331304144 in words is "twenty billion, three hundred thirty-one million, three hundred four thousand, one hundred forty-four".