80111866 has 16 divisors (see below), whose sum is σ = 126675360. Its totient is φ = 37892880.

The previous prime is 80111861. The next prime is 80111869. The reversal of 80111866 is 66811108.

It is a happy number.

It is a super-2 number, since 2×80111866² = 12835822148003912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80111861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39325 + ... + 41311.

It is an arithmetic number, because the mean of its divisors is an integer number (7917210).

Almost surely, 2^80111866 is an apocalyptic number.

80111866 is a deficient number, since it is larger than the sum of its proper divisors (46563494).

80111866 is a wasteful number, since it uses less digits than its factorization.

80111866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3069.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 80111866 is about 8950.5232249294. The cubic root of 80111866 is about 431.0876844584.

The spelling of 80111866 in words is "eighty million, one hundred eleven thousand, eight hundred sixty-six".