32644223489 has 2 divisors, whose sum is σ = 32644223490. Its totient is φ = 32644223488.

The previous prime is 32644223473. The next prime is 32644223503. The reversal of 32644223489 is 98432244623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24154443889 + 8489779600 = 155417^2 + 92140^2 .

It is a cyclic number.

It is not a de Polignac number, because 32644223489 - 2⁴ = 32644223473 is a prime.

It is not a weakly prime, because it can be changed into another prime (32644223189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16322111744 + 16322111745.

It is an arithmetic number, because the mean of its divisors is an integer number (16322111745).

Almost surely, 2^32644223489 is an apocalyptic number.

It is an amenable number.

32644223489 is a deficient number, since it is larger than the sum of its proper divisors (1).

32644223489 is an equidigital number, since it uses as much as digits as its factorization.

32644223489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 47.

The spelling of 32644223489 in words is "thirty-two billion, six hundred forty-four million, two hundred twenty-three thousand, four hundred eighty-nine".