87999516822 has 48 divisors (see below), whose sum is σ = 213669642240. Its totient is φ = 23663732352.

The previous prime is 87999516797. The next prime is 87999516851. The reversal of 87999516822 is 22861599978.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3612822 + ... + 3637097.

It is an arithmetic number, because the mean of its divisors is an integer number (4451450880).

Almost surely, 2^87999516822 is an apocalyptic number.

87999516822 is an abundant number, since it is smaller than the sum of its proper divisors (125670125418).

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

87999516822 is a wasteful number, since it uses less digits than its factorization.

87999516822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249965 (or 7249948 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 66.

The spelling of 87999516822 in words is "eighty-seven billion, nine hundred ninety-nine million, five hundred sixteen thousand, eight hundred twenty-two".