13173645632 has 112 divisors (see below), whose sum is σ = 30358080000. Its totient is φ = 5555257344.

The previous prime is 13173645571. The next prime is 13173645637. The reversal of 13173645632 is 23654637131.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 13173645632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13173645637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15890594 + ... + 15891422.

Almost surely, 2^13173645632 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 13173645632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15179040000).

13173645632 is an abundant number, since it is smaller than the sum of its proper divisors (17184434368).

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

13173645632 is an equidigital number, since it uses as much as digits as its factorization.

13173645632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376 (or 1366 counting only the distinct ones).

The product of its digits is 272160, while the sum is 41.

The spelling of 13173645632 in words is "thirteen billion, one hundred seventy-three million, six hundred forty-five thousand, six hundred thirty-two".