80065911 has 4 divisors (see below), whose sum is σ = 106754552. Its totient is φ = 53377272.

The previous prime is 80065883. The next prime is 80065927. The reversal of 80065911 is 11956008.

It is a happy number.

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

It is not a de Polignac number, because 80065911 - 2⁶ = 80065847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80065991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13344316 + ... + 13344321.

It is an arithmetic number, because the mean of its divisors is an integer number (26688638).

Almost surely, 2^80065911 is an apocalyptic number.

80065911 is a deficient number, since it is larger than the sum of its proper divisors (26688641).

80065911 is a wasteful number, since it uses less digits than its factorization.

80065911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26688640.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 80065911 is about 8947.9556883123. The cubic root of 80065911 is about 431.0052396440.

The spelling of 80065911 in words is "eighty million, sixty-five thousand, nine hundred eleven".