802819355522 has 6 divisors (see below), whose sum is σ = 1204230933993. Its totient is φ = 401409044192.

The previous prime is 802819355519. The next prime is 802819355543. The reversal of 802819355522 is 225553918208.

It can be written as a sum of positive squares in 2 ways, for example, as 760036983601 + 42782371921 = 871801^2 + 206839^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=633569.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 950354 + ... + 1583922.

Almost surely, 2^802819355522 is an apocalyptic number.

802819355522 is a deficient number, since it is larger than the sum of its proper divisors (401411578471).

802819355522 is an frugal number, since it uses more digits than its factorization.

802819355522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267140 (or 633571 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 50.

Multiplying 802819355522 by its sum of digits (50), we get a square (40140967776100 = 6335690²).

The spelling of 802819355522 in words is "eight hundred two billion, eight hundred nineteen million, three hundred fifty-five thousand, five hundred twenty-two".