405221422433 has 4 divisors (see below), whose sum is σ = 405592165908. Its totient is φ = 404850678960.

The previous prime is 405221422421. The next prime is 405221422447. The reversal of 405221422433 is 334224122504.

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 224555620129 + 180665802304 = 473873^2 + 425048^2 .

It is a cyclic number.

It is not a de Polignac number, because 405221422433 - 2¹² = 405221418337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 405221422433.

It is not an unprimeable number, because it can be changed into a prime (405221422483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185370098 + ... + 185372283.

It is an arithmetic number, because the mean of its divisors is an integer number (101398041477).

Almost surely, 2^405221422433 is an apocalyptic number.

It is an amenable number.

405221422433 is a deficient number, since it is larger than the sum of its proper divisors (370743475).

405221422433 is a wasteful number, since it uses less digits than its factorization.

405221422433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370743474.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 405221422433 its reverse (334224122504), we get a palindrome (739445544937).

The spelling of 405221422433 in words is "four hundred five billion, two hundred twenty-one million, four hundred twenty-two thousand, four hundred thirty-three".