405033121321105 has 4 divisors (see below), whose sum is σ = 486039745585332. Its totient is φ = 324026497056880.

The previous prime is 405033121321079. The next prime is 405033121321117. The reversal of 405033121321105 is 501123121330504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105394390195329 + 299638731125776 = 10266177^2 + 17310076^2 .

It is not a de Polignac number, because 405033121321105 - 2⁷ = 405033121320977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 40503312132106 + ... + 40503312132115.

It is an arithmetic number, because the mean of its divisors is an integer number (121509936396333).

Almost surely, 2^{405033121321105} is an apocalyptic number.

It is an amenable number.

405033121321105 is a deficient number, since it is larger than the sum of its proper divisors (81006624264227).

405033121321105 is an equidigital number, since it uses as much as digits as its factorization.

405033121321105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81006624264226.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 405033121321105 its reverse (501123121330504), we get a palindrome (906156242651609).

The spelling of 405033121321105 in words is "four hundred five trillion, thirty-three billion, one hundred twenty-one million, three hundred twenty-one thousand, one hundred five".