80118617868 has 72 divisors (see below), whose sum is σ = 207097293312. Its totient is φ = 26104342752.

The previous prime is 80118617867. The next prime is 80118617879. The reversal of 80118617868 is 86871681108.

80118617868 is a `hidden beast` number, since 8 + 0 + 1 + 18 + 617 + 8 + 6 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (80118617863) by changing a digit.

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, 1301521 + ... + 1361687.

It is an arithmetic number, because the mean of its divisors is an integer number (2876351296).

Almost surely, 2^80118617868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80118617868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103548646656).

80118617868 is an abundant number, since it is smaller than the sum of its proper divisors (126978675444).

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

80118617868 is a wasteful number, since it uses less digits than its factorization.

80118617868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61011 (or 61006 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The spelling of 80118617868 in words is "eighty billion, one hundred eighteen million, six hundred seventeen thousand, eight hundred sixty-eight".