20533443152 has 10 divisors (see below), whose sum is σ = 39783546138. Its totient is φ = 10266721568.

The previous prime is 20533443137. The next prime is 20533443181. The reversal of 20533443152 is 25134433502.

It can be written as a sum of positive squares in only one way, i.e., 18355914256 + 2177528896 = 135484^2 + 46664^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641670083 + ... + 641670114.

Almost surely, 2^20533443152 is an apocalyptic number.

It is an amenable number.

20533443152 is a deficient number, since it is larger than the sum of its proper divisors (19250102986).

20533443152 is a wasteful number, since it uses less digits than its factorization.

20533443152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283340205 (or 1283340199 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 20533443152 its reverse (25134433502), we get a palindrome (45667876654).

The spelling of 20533443152 in words is "twenty billion, five hundred thirty-three million, four hundred forty-three thousand, one hundred fifty-two".