20004233345 has 16 divisors (see below), whose sum is σ = 24463991952. Its totient is φ = 15697593600.

The previous prime is 20004233341. The next prime is 20004233383. The reversal of 20004233345 is 54333240002.

It can be written as a sum of positive squares in 8 ways, for example, as 267355201 + 19736878144 = 16351^2 + 140488^2 .

It is not a de Polignac number, because 20004233345 - 2² = 20004233341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20004233341) 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 in 15 ways as a sum of consecutive naturals, for example, 1610579 + ... + 1622951.

It is an arithmetic number, because the mean of its divisors is an integer number (1528999497).

Almost surely, 2^20004233345 is an apocalyptic number.

It is an amenable number.

20004233345 is a deficient number, since it is larger than the sum of its proper divisors (4459758607).

20004233345 is a wasteful number, since it uses less digits than its factorization.

20004233345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18532.

The product of its (nonzero) digits is 8640, while the sum is 26.

Adding to 20004233345 its reverse (54333240002), we get a palindrome (74337473347).

The spelling of 20004233345 in words is "twenty billion, four million, two hundred thirty-three thousand, three hundred forty-five".