821252850936 has 48 divisors (see below), whose sum is σ = 2388337376040. Its totient is φ = 234643671360.

The previous prime is 821252850871. The next prime is 821252850937. The reversal of 821252850936 is 639058252128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821252850937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349170955 + ... + 349173306.

Almost surely, 2^821252850936 is an apocalyptic number.

It is an amenable number.

821252850936 is an abundant number, since it is smaller than the sum of its proper divisors (1567084525104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

821252850936 is a wasteful number, since it uses less digits than its factorization.

821252850936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698344284 (or 698344273 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 821252850936 in words is "eight hundred twenty-one billion, two hundred fifty-two million, eight hundred fifty thousand, nine hundred thirty-six".