20011323133 has 8 divisors (see below), whose sum is σ = 20068933248. Its totient is φ = 19953777024.

The previous prime is 20011323109. The next prime is 20011323139. The reversal of 20011323133 is 33132311002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011323133 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 20011323133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011323139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649485 + ... + 679597.

It is an arithmetic number, because the mean of its divisors is an integer number (2508616656).

Almost surely, 2^20011323133 is an apocalyptic number.

It is an amenable number.

20011323133 is a deficient number, since it is larger than the sum of its proper divisors (57610115).

20011323133 is a wasteful number, since it uses less digits than its factorization.

20011323133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32003.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20011323133 its reverse (33132311002), we get a palindrome (53143634135).

The spelling of 20011323133 in words is "twenty billion, eleven million, three hundred twenty-three thousand, one hundred thirty-three".