32664144656 has 80 divisors (see below), whose sum is σ = 74419070208. Its totient is φ = 13692672000.

The previous prime is 32664144631. The next prime is 32664144661. The reversal of 32664144656 is 65644146623.

It is a super-2 number, since 2×32664144656² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32664144656.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2741945 + ... + 2753831.

Almost surely, 2^32664144656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32664144656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37209535104).

32664144656 is an abundant number, since it is smaller than the sum of its proper divisors (41754925552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32664144656 is a wasteful number, since it uses less digits than its factorization.

32664144656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13120 (or 13114 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 47.

The spelling of 32664144656 in words is "thirty-two billion, six hundred sixty-four million, one hundred forty-four thousand, six hundred fifty-six".