535400486821 has 4 divisors (see below), whose sum is σ = 544177544044. Its totient is φ = 526623429600.

The previous prime is 535400486723. The next prime is 535400486833. The reversal of 535400486821 is 128684004535.

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 60424522596 + 474975964225 = 245814^2 + 689185^2 .

It is a cyclic number.

It is not a de Polignac number, because 535400486821 - 2¹⁹ = 535399962533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (535400486861) 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, 4388528520 + ... + 4388528641.

It is an arithmetic number, because the mean of its divisors is an integer number (136044386011).

Almost surely, 2^535400486821 is an apocalyptic number.

It is an amenable number.

535400486821 is a deficient number, since it is larger than the sum of its proper divisors (8777057223).

535400486821 is an equidigital number, since it uses as much as digits as its factorization.

535400486821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8777057222.

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 535400486821 in words is "five hundred thirty-five billion, four hundred million, four hundred eighty-six thousand, eight hundred twenty-one".