32644968809 has 2 divisors, whose sum is σ = 32644968810. Its totient is φ = 32644968808.

The previous prime is 32644968793. The next prime is 32644968823. The reversal of 32644968809 is 90886944623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30581265625 + 2063703184 = 174875^2 + 45428^2 .

It is an emirp because it is prime and its reverse (90886944623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32644968809 - 2⁴ = 32644968793 is a prime.

It is not a weakly prime, because it can be changed into another prime (32644961809) 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, 16322484404 + 16322484405.

It is an arithmetic number, because the mean of its divisors is an integer number (16322484405).

Almost surely, 2^32644968809 is an apocalyptic number.

It is an amenable number.

32644968809 is a deficient number, since it is larger than the sum of its proper divisors (1).

32644968809 is an equidigital number, since it uses as much as digits as its factorization.

32644968809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17915904, while the sum is 59.

The spelling of 32644968809 in words is "thirty-two billion, six hundred forty-four million, nine hundred sixty-eight thousand, eight hundred nine".