80809133 has 2 divisors, whose sum is σ = 80809134. Its totient is φ = 80809132.

The previous prime is 80809123. The next prime is 80809139. The reversal of 80809133 is 33190808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77757124 + 3052009 = 8818^2 + 1747^2 .

It is a cyclic number.

It is not a de Polignac number, because 80809133 - 2¹⁰ = 80808109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80809133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80809139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40404566 + 40404567.

It is an arithmetic number, because the mean of its divisors is an integer number (40404567).

Almost surely, 2^80809133 is an apocalyptic number.

It is an amenable number.

80809133 is a deficient number, since it is larger than the sum of its proper divisors (1).

80809133 is an equidigital number, since it uses as much as digits as its factorization.

80809133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 80809133 is about 8989.3900238003. The cubic root of 80809133 is about 432.3347546080.

The spelling of 80809133 in words is "eighty million, eight hundred nine thousand, one hundred thirty-three".