2145662543166 has 16 divisors (see below), whose sum is σ = 4295717447184. Its totient is φ = 714488787584.

The previous prime is 2145662543161. The next prime is 2145662543221. The reversal of 2145662543166 is 6613452665412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145662543161) 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 7 ways as a sum of consecutive naturals, for example, 183008685 + ... + 183020408.

It is an arithmetic number, because the mean of its divisors is an integer number (268482340449).

Almost surely, 2^{2145662543166} is an apocalyptic number.

2145662543166 is an abundant number, since it is smaller than the sum of its proper divisors (2150054904018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145662543166 is a wasteful number, since it uses less digits than its factorization.

2145662543166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366030075.

The product of its digits is 6220800, while the sum is 51.

The spelling of 2145662543166 in words is "two trillion, one hundred forty-five billion, six hundred sixty-two million, five hundred forty-three thousand, one hundred sixty-six".