20404202366 has 16 divisors (see below), whose sum is σ = 32409961056. Its totient is φ = 9601003776.

The previous prime is 20404202363. The next prime is 20404202407. The reversal of 20404202366 is 66320240402.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404202363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396575 + ... + 445061.

It is an arithmetic number, because the mean of its divisors is an integer number (2025622566).

Almost surely, 2^20404202366 is an apocalyptic number.

20404202366 is a deficient number, since it is larger than the sum of its proper divisors (12005758690).

20404202366 is a wasteful number, since it uses less digits than its factorization.

20404202366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60883.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 20404202366 its reverse (66320240402), we get a palindrome (86724442768).

The spelling of 20404202366 in words is "twenty billion, four hundred four million, two hundred two thousand, three hundred sixty-six".