16660371272325 has 48 divisors (see below), whose sum is σ = 30057336921600. Its totient is φ = 8075582257600.

The previous prime is 16660371272221. The next prime is 16660371272327. The reversal of 16660371272325 is 52327217306661.

It is a happy number.

It is not a de Polignac number, because 16660371272325 - 2¹⁶ = 16660371206789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660371272327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 353146 + ... + 5783204.

It is an arithmetic number, because the mean of its divisors is an integer number (626194519200).

Almost surely, 2^{16660371272325} is an apocalyptic number.

16660371272325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16660371272325 is a deficient number, since it is larger than the sum of its proper divisors (13396965649275).

16660371272325 is a wasteful number, since it uses less digits than its factorization.

16660371272325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433802 (or 5433797 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 51.

Adding to 16660371272325 its reverse (52327217306661), we get a palindrome (68987588578986).

The spelling of 16660371272325 in words is "sixteen trillion, six hundred sixty billion, three hundred seventy-one million, two hundred seventy-two thousand, three hundred twenty-five".