8115581822 has 36 divisors (see below), whose sum is σ = 13368587616. Its totient is φ = 3690408960.

The previous prime is 8115581807. The next prime is 8115581827. The reversal of 8115581822 is 2281855118.

It is a self number, because there is not a number n which added to its sum of digits gives 8115581822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8115581827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12058478 + ... + 12059150.

It is an arithmetic number, because the mean of its divisors is an integer number (371349656).

Almost surely, 2^8115581822 is an apocalyptic number.

8115581822 is a deficient number, since it is larger than the sum of its proper divisors (5253005794).

8115581822 is an equidigital number, since it uses as much as digits as its factorization.

8115581822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413 (or 723 counting only the distinct ones).

The product of its digits is 51200, while the sum is 41.

The square root of 8115581822 is about 90086.5240865691. The cubic root of 8115581822 is about 2009.5858013053.

The spelling of 8115581822 in words is "eight billion, one hundred fifteen million, five hundred eighty-one thousand, eight hundred twenty-two".