32644644623 has 6 divisors (see below), whose sum is σ = 33272205624. Its totient is φ = 32028705176.

The previous prime is 32644644611. The next prime is 32644644647.

32644644623 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 32644644623 - 2⁸ = 32644644367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32644644653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5807915 + ... + 5813532.

It is an arithmetic number, because the mean of its divisors is an integer number (5545367604).

Almost surely, 2^32644644623 is an apocalyptic number.

32644644623 is a deficient number, since it is larger than the sum of its proper divisors (627561001).

32644644623 is an equidigital number, since it uses as much as digits as its factorization.

32644644623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11621553 (or 11621500 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 44.

The spelling of 32644644623 in words is "thirty-two billion, six hundred forty-four million, six hundred forty-four thousand, six hundred twenty-three".