32391539161 has 2 divisors, whose sum is σ = 32391539162. Its totient is φ = 32391539160.

The previous prime is 32391539153. The next prime is 32391539177. The reversal of 32391539161 is 16193519323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32168216025 + 223323136 = 179355^2 + 14944^2 .

It is an emirp because it is prime and its reverse (16193519323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32391539161 - 2³ = 32391539153 is a prime.

It is not a weakly prime, because it can be changed into another prime (32391539261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16195769580 + 16195769581.

It is an arithmetic number, because the mean of its divisors is an integer number (16195769581).

Almost surely, 2^32391539161 is an apocalyptic number.

It is an amenable number.

32391539161 is a deficient number, since it is larger than the sum of its proper divisors (1).

32391539161 is an equidigital number, since it uses as much as digits as its factorization.

32391539161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 43.

The spelling of 32391539161 in words is "thirty-two billion, three hundred ninety-one million, five hundred thirty-nine thousand, one hundred sixty-one".