20433221004146 has 8 divisors (see below), whose sum is σ = 30706485540204. Its totient is φ = 10197725824080.

The previous prime is 20433221004073. The next prime is 20433221004193. The reversal of 20433221004146 is 64140012233402.

It can be written as a sum of positive squares in 2 ways, for example, as 18436383525121 + 1996837479025 = 4293761^2 + 1413095^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9442337645 + ... + 9442339808.

Almost surely, 2^{20433221004146} is an apocalyptic number.

20433221004146 is a deficient number, since it is larger than the sum of its proper divisors (10273264536058).

20433221004146 is a wasteful number, since it uses less digits than its factorization.

20433221004146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18884677996.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 20433221004146 its reverse (64140012233402), we get a palindrome (84573233237548).

The spelling of 20433221004146 in words is "twenty trillion, four hundred thirty-three billion, two hundred twenty-one million, four thousand, one hundred forty-six".