80666118 has 40 divisors (see below), whose sum is σ = 194660928. Its totient is φ = 24819696.

The previous prime is 80666111. The next prime is 80666141. The reversal of 80666118 is 81166608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80666111) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17046 + ... + 21257.

Almost surely, 2^80666118 is an apocalyptic number.

80666118 is an abundant number, since it is smaller than the sum of its proper divisors (113994810).

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

80666118 is a wasteful number, since it uses less digits than its factorization.

80666118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38330 (or 38321 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 80666118 is about 8981.4318457582. The cubic root of 80666118 is about 432.0795571071.

The spelling of 80666118 in words is "eighty million, six hundred sixty-six thousand, one hundred eighteen".