80168865 has 16 divisors (see below), whose sum is σ = 146594688. Its totient is φ = 36648576.

The previous prime is 80168861. The next prime is 80168897. The reversal of 80168865 is 56886108.

It is not a de Polignac number, because 80168865 - 2² = 80168861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80168861) 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 15 ways as a sum of consecutive naturals, for example, 381652 + ... + 381861.

It is an arithmetic number, because the mean of its divisors is an integer number (9162168).

Almost surely, 2^80168865 is an apocalyptic number.

It is an amenable number.

80168865 is a deficient number, since it is larger than the sum of its proper divisors (66425823).

80168865 is a wasteful number, since it uses less digits than its factorization.

80168865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763528.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 80168865 is about 8953.7067742919. The cubic root of 80168865 is about 431.1898987867.

The spelling of 80168865 in words is "eighty million, one hundred sixty-eight thousand, eight hundred sixty-five".