20203133405 has 24 divisors (see below), whose sum is σ = 30371308632. Its totient is φ = 12787915392.

The previous prime is 20203133339. The next prime is 20203133413. The reversal of 20203133405 is 50433130202.

It can be written as a sum of positive squares in 4 ways, for example, as 2731316644 + 17471816761 = 52262^2 + 132181^2 .

It is not a de Polignac number, because 20203133405 - 2¹⁴ = 20203117021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3168422 + ... + 3174791.

It is an arithmetic number, because the mean of its divisors is an integer number (1265471193).

Almost surely, 2^20203133405 is an apocalyptic number.

It is an amenable number.

20203133405 is a deficient number, since it is larger than the sum of its proper divisors (10168175227).

20203133405 is a wasteful number, since it uses less digits than its factorization.

20203133405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343245 (or 6343238 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 20203133405 its reverse (50433130202), we get a palindrome (70636263607).

The spelling of 20203133405 in words is "twenty billion, two hundred three million, one hundred thirty-three thousand, four hundred five".