80505163 has 4 divisors (see below), whose sum is σ = 80926848. Its totient is φ = 80083480.

The previous prime is 80505127. The next prime is 80505169. The reversal of 80505163 is 36150508.

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 80505163 - 2⁹ = 80504651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80505169) 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, 210556 + ... + 210937.

It is an arithmetic number, because the mean of its divisors is an integer number (20231712).

Almost surely, 2^80505163 is an apocalyptic number.

80505163 is a deficient number, since it is larger than the sum of its proper divisors (421685).

80505163 is a wasteful number, since it uses less digits than its factorization.

80505163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421684.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 80505163 is about 8972.4669405911. The cubic root of 80505163 is about 431.7919862602.

The spelling of 80505163 in words is "eighty million, five hundred five thousand, one hundred sixty-three".