20400323333 has 8 divisors (see below), whose sum is σ = 22384100088. Its totient is φ = 18475763904.

The previous prime is 20400323311. The next prime is 20400323353. The reversal of 20400323333 is 33332300402.

It can be written as a sum of positive squares in 4 ways, for example, as 950673889 + 19449649444 = 30833^2 + 139462^2 .

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

It is not a de Polignac number, because 20400323333 - 2⁸ = 20400323077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20400323299 and 20400323308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400323303) 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, 14803610 + ... + 14804987.

It is an arithmetic number, because the mean of its divisors is an integer number (2798012511).

Almost surely, 2^20400323333 is an apocalyptic number.

It is an amenable number.

20400323333 is a deficient number, since it is larger than the sum of its proper divisors (1983776755).

20400323333 is a wasteful number, since it uses less digits than its factorization.

20400323333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29608663.

The product of its (nonzero) digits is 3888, while the sum is 23.

Adding to 20400323333 its reverse (33332300402), we get a palindrome (53732623735).

The spelling of 20400323333 in words is "twenty billion, four hundred million, three hundred twenty-three thousand, three hundred thirty-three".