532257785809 has 2 divisors, whose sum is σ = 532257785810. Its totient is φ = 532257785808.

The previous prime is 532257785771. The next prime is 532257785879. The reversal of 532257785809 is 908587752235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 521247900625 + 11009885184 = 721975^2 + 104928^2 .

It is a cyclic number.

It is not a de Polignac number, because 532257785809 - 2⁷ = 532257785681 is a prime.

It is not a weakly prime, because it can be changed into another prime (532257785879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266128892904 + 266128892905.

It is an arithmetic number, because the mean of its divisors is an integer number (266128892905).

Almost surely, 2^532257785809 is an apocalyptic number.

It is an amenable number.

532257785809 is a deficient number, since it is larger than the sum of its proper divisors (1).

532257785809 is an equidigital number, since it uses as much as digits as its factorization.

532257785809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336000, while the sum is 61.

The spelling of 532257785809 in words is "five hundred thirty-two billion, two hundred fifty-seven million, seven hundred eighty-five thousand, eight hundred nine".