80045985 has 32 divisors (see below), whose sum is σ = 132312960. Its totient is φ = 41292288.

The previous prime is 80045971. The next prime is 80045989. The reversal of 80045985 is 58954008.

It is not a de Polignac number, because 80045985 - 2⁶ = 80045921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80045989) 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 31 ways as a sum of consecutive naturals, for example, 129006 + ... + 129624.

It is an arithmetic number, because the mean of its divisors is an integer number (4134780).

Almost surely, 2^80045985 is an apocalyptic number.

It is an amenable number.

80045985 is a deficient number, since it is larger than the sum of its proper divisors (52266975).

80045985 is a wasteful number, since it uses less digits than its factorization.

80045985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 80045985 is about 8946.8421803450. The cubic root of 80045985 is about 430.9694819253.

The spelling of 80045985 in words is "eighty million, forty-five thousand, nine hundred eighty-five".