80818045 has 16 divisors (see below), whose sum is σ = 120912768. Its totient is φ = 50379840.

The previous prime is 80818043. The next prime is 80818061. The reversal of 80818045 is 54081808.

It is not a de Polignac number, because 80818045 - 2¹ = 80818043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80818045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80818043) 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, 104574 + ... + 105343.

It is an arithmetic number, because the mean of its divisors is an integer number (7557048).

Almost surely, 2^80818045 is an apocalyptic number.

It is an amenable number.

80818045 is a deficient number, since it is larger than the sum of its proper divisors (40094723).

80818045 is a wasteful number, since it uses less digits than its factorization.

80818045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209940.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 80818045 is about 8989.8857056138. The cubic root of 80818045 is about 432.3506473071.

The spelling of 80818045 in words is "eighty million, eight hundred eighteen thousand, forty-five".