20368029533 has 4 divisors (see below), whose sum is σ = 20368337148. Its totient is φ = 20367721920.

The previous prime is 20368029529. The next prime is 20368029589. The reversal of 20368029533 is 33592086302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19812814564 + 555214969 = 140758^2 + 23563^2 .

It is a cyclic number.

It is not a de Polignac number, because 20368029533 - 2² = 20368029529 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 (20368029133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9116 + ... + 202037.

It is an arithmetic number, because the mean of its divisors is an integer number (5092084287).

Almost surely, 2^20368029533 is an apocalyptic number.

It is an amenable number.

20368029533 is a deficient number, since it is larger than the sum of its proper divisors (307615).

20368029533 is an equidigital number, since it uses as much as digits as its factorization.

20368029533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307614.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 20368029533 in words is "twenty billion, three hundred sixty-eight million, twenty-nine thousand, five hundred thirty-three".