20320011133 has 8 divisors (see below), whose sum is σ = 20377153368. Its totient is φ = 20262944064.

The previous prime is 20320011097. The next prime is 20320011143. The reversal of 20320011133 is 33111002302.

It can be written as a sum of positive squares in 4 ways, for example, as 1253372409 + 19066638724 = 35403^2 + 138082^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20320011133 - 2²¹ = 20317913981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320011143) 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, 546235 + ... + 582247.

It is an arithmetic number, because the mean of its divisors is an integer number (2547144171).

Almost surely, 2^20320011133 is an apocalyptic number.

It is an amenable number.

20320011133 is a deficient number, since it is larger than the sum of its proper divisors (57142235).

20320011133 is a wasteful number, since it uses less digits than its factorization.

20320011133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37583.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20320011133 its reverse (33111002302), we get a palindrome (53431013435).

The spelling of 20320011133 in words is "twenty billion, three hundred twenty million, eleven thousand, one hundred thirty-three".