8068821618 has 64 divisors (see below), whose sum is σ = 19956787200. Its totient is φ = 2138218560.

The previous prime is 8068821589. The next prime is 8068821721. The reversal of 8068821618 is 8161288608.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231178 + ... + 263781.

It is an arithmetic number, because the mean of its divisors is an integer number (311824800).

Almost surely, 2^8068821618 is an apocalyptic number.

8068821618 is an abundant number, since it is smaller than the sum of its proper divisors (11887965582).

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

8068821618 is a wasteful number, since it uses less digits than its factorization.

8068821618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495007.

The product of its (nonzero) digits is 294912, while the sum is 48.

The square root of 8068821618 is about 89826.6197627407. The cubic root of 8068821618 is about 2005.7187670991.

The spelling of 8068821618 in words is "eight billion, sixty-eight million, eight hundred twenty-one thousand, six hundred eighteen".