20404313440183 has 2 divisors, whose sum is σ = 20404313440184. Its totient is φ = 20404313440182.

The previous prime is 20404313440163. The next prime is 20404313440213. The reversal of 20404313440183 is 38104431340402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20404313440183 is a prime.

It is a super-2 number, since 2×20404313440183² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20404313440153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10202156720091 + 10202156720092.

It is an arithmetic number, because the mean of its divisors is an integer number (10202156720092).

Almost surely, 2^{20404313440183} is an apocalyptic number.

20404313440183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20404313440183 is an equidigital number, since it uses as much as digits as its factorization.

20404313440183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 20404313440183 its reverse (38104431340402), we get a palindrome (58508744780585).

The spelling of 20404313440183 in words is "twenty trillion, four hundred four billion, three hundred thirteen million, four hundred forty thousand, one hundred eighty-three".