16655507111125 has 64 divisors (see below), whose sum is σ = 21359209697280. Its totient is φ = 12962097192000.

The previous prime is 16655507111081. The next prime is 16655507111141. The reversal of 16655507111125 is 52111170555661.

It is a happy number.

It is not a de Polignac number, because 16655507111125 - 2¹¹ = 16655507109077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3385951416 + ... + 3385956334.

It is an arithmetic number, because the mean of its divisors is an integer number (333737651520).

Almost surely, 2^{16655507111125} is an apocalyptic number.

It is an amenable number.

16655507111125 is a deficient number, since it is larger than the sum of its proper divisors (4703702586155).

16655507111125 is an equidigital number, since it uses as much as digits as its factorization.

16655507111125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9955 (or 9945 counting only the distinct ones).

The product of its (nonzero) digits is 315000, while the sum is 46.

Adding to 16655507111125 its reverse (52111170555661), we get a palindrome (68766677666786).

The spelling of 16655507111125 in words is "sixteen trillion, six hundred fifty-five billion, five hundred seven million, one hundred eleven thousand, one hundred twenty-five".