400021433044133 has 2 divisors, whose sum is σ = 400021433044134. Its totient is φ = 400021433044132.

The previous prime is 400021433044021. The next prime is 400021433044151. The reversal of 400021433044133 is 331440334120004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225932223605764 + 174089209438369 = 15031042^2 + 13194287^2 .

It is a cyclic number.

It is not a de Polignac number, because 400021433044133 - 2¹² = 400021433040037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400021433044133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400021433041133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200010716522066 + 200010716522067.

It is an arithmetic number, because the mean of its divisors is an integer number (200010716522067).

Almost surely, 2^{400021433044133} is an apocalyptic number.

It is an amenable number.

400021433044133 is a deficient number, since it is larger than the sum of its proper divisors (1).

400021433044133 is an equidigital number, since it uses as much as digits as its factorization.

400021433044133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 400021433044133 its reverse (331440334120004), we get a palindrome (731461767164137).

The spelling of 400021433044133 in words is "four hundred trillion, twenty-one billion, four hundred thirty-three million, forty-four thousand, one hundred thirty-three".