32768165809 has 2 divisors, whose sum is σ = 32768165810. Its totient is φ = 32768165808.

The previous prime is 32768165791. The next prime is 32768165821. The reversal of 32768165809 is 90856186723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32639842225 + 128323584 = 180665^2 + 11328^2 .

It is a cyclic number.

It is not a de Polignac number, because 32768165809 - 2¹⁷ = 32768034737 is a prime.

It is a super-2 number, since 2×32768165809² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32768165809.

It is not a weakly prime, because it can be changed into another prime (32768165869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16384082904 + 16384082905.

It is an arithmetic number, because the mean of its divisors is an integer number (16384082905).

Almost surely, 2^32768165809 is an apocalyptic number.

It is an amenable number.

32768165809 is a deficient number, since it is larger than the sum of its proper divisors (1).

32768165809 is an equidigital number, since it uses as much as digits as its factorization.

32768165809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 32768165809 in words is "thirty-two billion, seven hundred sixty-eight million, one hundred sixty-five thousand, eight hundred nine".