20433311001 has 12 divisors (see below), whose sum is σ = 29677850020. Its totient is φ = 13546945440.

The previous prime is 20433310991. The next prime is 20433311009. The reversal of 20433311001 is 10011333402.

It can be written as a sum of positive squares in 2 ways, for example, as 3153945600 + 17279365401 = 56160^2 + 131451^2 .

It is not a de Polignac number, because 20433311001 - 2⁵ = 20433310969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20433311009) 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 11 ways as a sum of consecutive naturals, for example, 6270106 + ... + 6273363.

Almost surely, 2^20433311001 is an apocalyptic number.

It is an amenable number.

20433311001 is a deficient number, since it is larger than the sum of its proper divisors (9244539019).

20433311001 is a wasteful number, since it uses less digits than its factorization.

20433311001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543656 (or 12543653 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20433311001 its reverse (10011333402), we get a palindrome (30444644403).

The spelling of 20433311001 in words is "twenty billion, four hundred thirty-three million, three hundred eleven thousand, one".