80652765209 has 2 divisors, whose sum is σ = 80652765210. Its totient is φ = 80652765208.

The previous prime is 80652765101. The next prime is 80652765233. The reversal of 80652765209 is 90256725608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65396809984 + 15255955225 = 255728^2 + 123515^2 .

It is a cyclic number.

It is not a de Polignac number, because 80652765209 - 2⁸ = 80652764953 is a prime.

It is not a weakly prime, because it can be changed into another prime (80652765269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40326382604 + 40326382605.

It is an arithmetic number, because the mean of its divisors is an integer number (40326382605).

Almost surely, 2^80652765209 is an apocalyptic number.

It is an amenable number.

80652765209 is a deficient number, since it is larger than the sum of its proper divisors (1).

80652765209 is an equidigital number, since it uses as much as digits as its factorization.

80652765209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 80652765209 in words is "eighty billion, six hundred fifty-two million, seven hundred sixty-five thousand, two hundred nine".