8221016838533 has 8 divisors (see below), whose sum is σ = 8333742471000. Its totient is φ = 8108294151168.

The previous prime is 8221016838527. The next prime is 8221016838557. The reversal of 8221016838533 is 3358386101228.

It can be written as a sum of positive squares in 4 ways, for example, as 3662010395044 + 4559006443489 = 1913638^2 + 2135183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8221016838533 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 (8221016838563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5212043 + ... + 6603591.

It is an arithmetic number, because the mean of its divisors is an integer number (1041717808875).

Almost surely, 2^{8221016838533} is an apocalyptic number.

It is an amenable number.

8221016838533 is a deficient number, since it is larger than the sum of its proper divisors (112725632467).

8221016838533 is a wasteful number, since it uses less digits than its factorization.

8221016838533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472551.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 8221016838533 in words is "eight trillion, two hundred twenty-one billion, sixteen million, eight hundred thirty-eight thousand, five hundred thirty-three".