20404201033 has 4 divisors (see below), whose sum is σ = 20404762240. Its totient is φ = 20403639828.

The previous prime is 20404201021. The next prime is 20404201049. The reversal of 20404201033 is 33010240402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20404201033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20404201033.

It is not an unprimeable number, because it can be changed into a prime (20434201033) 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, 221985 + ... + 300142.

It is an arithmetic number, because the mean of its divisors is an integer number (5101190560).

Almost surely, 2^20404201033 is an apocalyptic number.

It is an amenable number.

20404201033 is a deficient number, since it is larger than the sum of its proper divisors (561207).

20404201033 is an equidigital number, since it uses as much as digits as its factorization.

20404201033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561206.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20404201033 its reverse (33010240402), we get a palindrome (53414441435).

The spelling of 20404201033 in words is "twenty billion, four hundred four million, two hundred one thousand, thirty-three".