2166146573287 has 4 divisors (see below), whose sum is σ = 2166609528720. Its totient is φ = 2165683617856.

The previous prime is 2166146573281. The next prime is 2166146573317. The reversal of 2166146573287 is 7823756416612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166146573287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166146573281) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 231470698 + ... + 231480055.

It is an arithmetic number, because the mean of its divisors is an integer number (541652382180).

Almost surely, 2^{2166146573287} is an apocalyptic number.

2166146573287 is a deficient number, since it is larger than the sum of its proper divisors (462955433).

2166146573287 is an equidigital number, since it uses as much as digits as its factorization.

2166146573287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462955432.

The product of its digits is 20321280, while the sum is 58.

The spelling of 2166146573287 in words is "two trillion, one hundred sixty-six billion, one hundred forty-six million, five hundred seventy-three thousand, two hundred eighty-seven".