2166717171670 has 32 divisors (see below), whose sum is σ = 4035150561600. Its totient is φ = 836682112896.

The previous prime is 2166717171667. The next prime is 2166717171677. The reversal of 2166717171670 is 761717176612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166717171677) 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 15 ways as a sum of consecutive naturals, for example, 1525192 + ... + 2580628.

It is an arithmetic number, because the mean of its divisors is an integer number (126098455050).

Almost surely, 2^{2166717171670} is an apocalyptic number.

2166717171670 is a deficient number, since it is larger than the sum of its proper divisors (1868433389930).

2166717171670 is a wasteful number, since it uses less digits than its factorization.

2166717171670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062552.

The product of its (nonzero) digits is 1037232, while the sum is 52.

The spelling of 2166717171670 in words is "two trillion, one hundred sixty-six billion, seven hundred seventeen million, one hundred seventy-one thousand, six hundred seventy".