16545054171887 has 2 divisors, whose sum is σ = 16545054171888. Its totient is φ = 16545054171886.

The previous prime is 16545054171857. The next prime is 16545054172007. The reversal of 16545054171887 is 78817145054561.

16545054171887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16545054171887 - 2⁶ = 16545054171823 is a prime.

It is a super-2 number, since 2×16545054171887² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16545054171847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272527085943 + 8272527085944.

It is an arithmetic number, because the mean of its divisors is an integer number (8272527085944).

Almost surely, 2^{16545054171887} is an apocalyptic number.

16545054171887 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545054171887 is an equidigital number, since it uses as much as digits as its factorization.

16545054171887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632000, while the sum is 62.

The spelling of 16545054171887 in words is "sixteen trillion, five hundred forty-five billion, fifty-four million, one hundred seventy-one thousand, eight hundred eighty-seven".