8116321788 has 72 divisors (see below), whose sum is σ = 21930513696. Its totient is φ = 2524684800.

The previous prime is 8116321771. The next prime is 8116321793. The reversal of 8116321788 is 8871236118.

It is a happy number.

8116321788 is a `hidden beast` number, since 8 + 1 + 1 + 632 + 1 + 7 + 8 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85593 + ... + 153488.

It is an arithmetic number, because the mean of its divisors is an integer number (304590468).

Almost surely, 2^8116321788 is an apocalyptic number.

It is an amenable number.

8116321788 is an abundant number, since it is smaller than the sum of its proper divisors (13814191908).

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

8116321788 is a wasteful number, since it uses less digits than its factorization.

8116321788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239155 (or 239150 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 8116321788 is about 90090.6309668214. The cubic root of 8116321788 is about 2009.6468764078.

The spelling of 8116321788 in words is "eight billion, one hundred sixteen million, three hundred twenty-one thousand, seven hundred eighty-eight".