20403233204 has 6 divisors (see below), whose sum is σ = 35705658114. Its totient is φ = 10201616600.

The previous prime is 20403233131. The next prime is 20403233209. The reversal of 20403233204 is 40233230402.

It can be written as a sum of positive squares in only one way, i.e., 14184333604 + 6218899600 = 119098^2 + 78860^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20403233204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403233209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550404147 + ... + 2550404154.

It is an arithmetic number, because the mean of its divisors is an integer number (5950943019).

Almost surely, 2^20403233204 is an apocalyptic number.

It is an amenable number.

20403233204 is a deficient number, since it is larger than the sum of its proper divisors (15302424910).

20403233204 is a wasteful number, since it uses less digits than its factorization.

20403233204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100808305 (or 5100808303 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 20403233204 its reverse (40233230402), we get a palindrome (60636463606).

The spelling of 20403233204 in words is "twenty billion, four hundred three million, two hundred thirty-three thousand, two hundred four".