20441257533 has 12 divisors (see below), whose sum is σ = 29812924960. Its totient is φ = 13495198536.

The previous prime is 20441257489. The next prime is 20441257553. The reversal of 20441257533 is 33575214402.

20441257533 is a `hidden beast` number, since 2 + 0 + 44 + 12 + 575 + 33 = 666.

It is not a de Polignac number, because 20441257533 - 2¹⁸ = 20440995389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441257553) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11024563 + ... + 11026416.

Almost surely, 2^20441257533 is an apocalyptic number.

It is an amenable number.

20441257533 is a deficient number, since it is larger than the sum of its proper divisors (9371667427).

20441257533 is a wasteful number, since it uses less digits than its factorization.

20441257533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22051088 (or 22051085 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The spelling of 20441257533 in words is "twenty billion, four hundred forty-one million, two hundred fifty-seven thousand, five hundred thirty-three".