16545170446325 has 6 divisors (see below), whose sum is σ = 20516011353474. Its totient is φ = 13236136357040.

The previous prime is 16545170446291. The next prime is 16545170446379. The reversal of 16545170446325 is 52364407154561.

It can be written as a sum of positive squares in 3 ways, for example, as 1148579471524 + 15396590974801 = 1071718^2 + 3923849^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16545170446325 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330903408902 + ... + 330903408951.

It is an arithmetic number, because the mean of its divisors is an integer number (3419335225579).

Almost surely, 2^{16545170446325} is an apocalyptic number.

It is an amenable number.

16545170446325 is a deficient number, since it is larger than the sum of its proper divisors (3970840907149).

16545170446325 is an equidigital number, since it uses as much as digits as its factorization.

16545170446325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661806817863 (or 661806817858 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 53.

The spelling of 16545170446325 in words is "sixteen trillion, five hundred forty-five billion, one hundred seventy million, four hundred forty-six thousand, three hundred twenty-five".