32166485509 has 2 divisors, whose sum is σ = 32166485510. Its totient is φ = 32166485508.

The previous prime is 32166485489. The next prime is 32166485539. The reversal of 32166485509 is 90558466123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24083936100 + 8082549409 = 155190^2 + 89903^2 .

It is a cyclic number.

It is not a de Polignac number, because 32166485509 - 2¹⁵ = 32166452741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32166485539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16083242754 + 16083242755.

It is an arithmetic number, because the mean of its divisors is an integer number (16083242755).

Almost surely, 2^32166485509 is an apocalyptic number.

It is an amenable number.

32166485509 is a deficient number, since it is larger than the sum of its proper divisors (1).

32166485509 is an equidigital number, since it uses as much as digits as its factorization.

32166485509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 32166485509 in words is "thirty-two billion, one hundred sixty-six million, four hundred eighty-five thousand, five hundred nine".