821008083050 has 24 divisors (see below), whose sum is σ = 1568347336236. Its totient is φ = 319527469440.

The previous prime is 821008083047. The next prime is 821008083067. The reversal of 821008083050 is 50380800128.

It can be written as a sum of positive squares in 6 ways, for example, as 631050705769 + 189957377281 = 794387^2 + 435841^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 821008083050.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221892227 + ... + 221895926.

Almost surely, 2^821008083050 is an apocalyptic number.

821008083050 is a deficient number, since it is larger than the sum of its proper divisors (747339253186).

821008083050 is a wasteful number, since it uses less digits than its factorization.

821008083050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443788202 (or 443788197 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

Adding to 821008083050 its reverse (50380800128), we get a palindrome (871388883178).

The spelling of 821008083050 in words is "eight hundred twenty-one billion, eight million, eighty-three thousand, fifty".