80805081 has 16 divisors (see below), whose sum is σ = 129612800. Its totient is φ = 43743888.

The previous prime is 80805073. The next prime is 80805089. The reversal of 80805081 is 18050808.

It is an interprime number because it is at equal distance from previous prime (80805073) and next prime (80805089).

It is not a de Polignac number, because 80805081 - 2³ = 80805073 is a prime.

It is a super-2 number, since 2×80805081² = 13058922230833122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80805089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100861 + ... + 101658.

It is an arithmetic number, because the mean of its divisors is an integer number (8100800).

Almost surely, 2^80805081 is an apocalyptic number.

It is an amenable number.

80805081 is a deficient number, since it is larger than the sum of its proper divisors (48807719).

80805081 is a wasteful number, since it uses less digits than its factorization.

80805081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202548.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 80805081 is about 8989.1646441702. The cubic root of 80805081 is about 432.3275283220.

Adding to 80805081 its reverse (18050808), we get a palindrome (98855889).

The spelling of 80805081 in words is "eighty million, eight hundred five thousand, eighty-one".