20333242355 has 4 divisors (see below), whose sum is σ = 24399890832. Its totient is φ = 16266593880.

The previous prime is 20333242351. The next prime is 20333242403. The reversal of 20333242355 is 55324233302.

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

It is not a de Polignac number, because 20333242355 - 2² = 20333242351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20333242351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033324231 + ... + 2033324240.

It is an arithmetic number, because the mean of its divisors is an integer number (6099972708).

Almost surely, 2^20333242355 is an apocalyptic number.

20333242355 is a deficient number, since it is larger than the sum of its proper divisors (4066648477).

20333242355 is an equidigital number, since it uses as much as digits as its factorization.

20333242355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066648476.

The product of its (nonzero) digits is 64800, while the sum is 32.

Adding to 20333242355 its reverse (55324233302), we get a palindrome (75657475657).

The spelling of 20333242355 in words is "twenty billion, three hundred thirty-three million, two hundred forty-two thousand, three hundred fifty-five".