404305542442253 has 2 divisors, whose sum is σ = 404305542442254. Its totient is φ = 404305542442252.

The previous prime is 404305542442223. The next prime is 404305542442303. The reversal of 404305542442253 is 352244245503404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214251663726244 + 190053878716009 = 14637338^2 + 13786003^2 .

It is a cyclic number.

It is not a de Polignac number, because 404305542442253 - 2²⁴ = 404305525665037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404305542442198 and 404305542442207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404305542442223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202152771221126 + 202152771221127.

It is an arithmetic number, because the mean of its divisors is an integer number (202152771221127).

Almost surely, 2^{404305542442253} is an apocalyptic number.

It is an amenable number.

404305542442253 is a deficient number, since it is larger than the sum of its proper divisors (1).

404305542442253 is an equidigital number, since it uses as much as digits as its factorization.

404305542442253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216000, while the sum is 47.

Adding to 404305542442253 its reverse (352244245503404), we get a palindrome (756549787945657).

The spelling of 404305542442253 in words is "four hundred four trillion, three hundred five billion, five hundred forty-two million, four hundred forty-two thousand, two hundred fifty-three".