821158763112 has 48 divisors (see below), whose sum is σ = 2224301040000. Its totient is φ = 273679047456.

The previous prime is 821158763099. The next prime is 821158763119. The reversal of 821158763112 is 211367851128.

821158763112 is a `hidden beast` number, since 8 + 2 + 1 + 1 + 5 + 8 + 7 + 631 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (821158763119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353112 + ... + 1329287.

It is an arithmetic number, because the mean of its divisors is an integer number (46339605000).

Almost surely, 2^821158763112 is an apocalyptic number.

It is an amenable number.

821158763112 is an abundant number, since it is smaller than the sum of its proper divisors (1403142276888).

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

821158763112 is a wasteful number, since it uses less digits than its factorization.

821158763112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689190 (or 1689183 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The spelling of 821158763112 in words is "eight hundred twenty-one billion, one hundred fifty-eight million, seven hundred sixty-three thousand, one hundred twelve".