80081187 has 4 divisors (see below), whose sum is σ = 106774920. Its totient is φ = 53387456.

The previous prime is 80081173. The next prime is 80081207. The reversal of 80081187 is 78118008.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80081187 - 2⁴ = 80081171 is a prime.

It is a super-2 number, since 2×80081187² = 12825993022657938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80081107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13346862 + ... + 13346867.

It is an arithmetic number, because the mean of its divisors is an integer number (26693730).

Almost surely, 2^80081187 is an apocalyptic number.

80081187 is a deficient number, since it is larger than the sum of its proper divisors (26693733).

80081187 is a wasteful number, since it uses less digits than its factorization.

80081187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26693732.

The product of its (nonzero) digits is 3584, while the sum is 33.

The square root of 80081187 is about 8948.8092503975. The cubic root of 80081187 is about 431.0326488009.

The spelling of 80081187 in words is "eighty million, eighty-one thousand, one hundred eighty-seven".