20403133411 has 4 divisors (see below), whose sum is σ = 21290226192. Its totient is φ = 19516040632.

The previous prime is 20403133363. The next prime is 20403133427. The reversal of 20403133411 is 11433130402.

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

It is a cyclic number.

It is not a de Polignac number, because 20403133411 - 2¹⁵ = 20403100643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20404133411) 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 3 ways as a sum of consecutive naturals, for example, 443546356 + ... + 443546401.

It is an arithmetic number, because the mean of its divisors is an integer number (5322556548).

Almost surely, 2^20403133411 is an apocalyptic number.

20403133411 is a deficient number, since it is larger than the sum of its proper divisors (887092781).

20403133411 is an equidigital number, since it uses as much as digits as its factorization.

20403133411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887092780.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20403133411 its reverse (11433130402), we get a palindrome (31836263813).

The spelling of 20403133411 in words is "twenty billion, four hundred three million, one hundred thirty-three thousand, four hundred eleven".