404252450455129 has 2 divisors, whose sum is σ = 404252450455130. Its totient is φ = 404252450455128.

The previous prime is 404252450455109. The next prime is 404252450455267. The reversal of 404252450455129 is 921554054252404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268030989209104 + 136221461246025 = 16371652^2 + 11671395^2 .

It is a cyclic number.

It is not a de Polignac number, because 404252450455129 - 2¹⁵ = 404252450422361 is a prime.

It is not a weakly prime, because it can be changed into another prime (404252450455109) 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, 202126225227564 + 202126225227565.

It is an arithmetic number, because the mean of its divisors is an integer number (202126225227565).

Almost surely, 2^{404252450455129} is an apocalyptic number.

It is an amenable number.

404252450455129 is a deficient number, since it is larger than the sum of its proper divisors (1).

404252450455129 is an equidigital number, since it uses as much as digits as its factorization.

404252450455129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520000, while the sum is 52.

The spelling of 404252450455129 in words is "four hundred four trillion, two hundred fifty-two billion, four hundred fifty million, four hundred fifty-five thousand, one hundred twenty-nine".