2166144425117 has 8 divisors (see below), whose sum is σ = 2293585398072. Its totient is φ = 2038705753600.

The previous prime is 2166144425111. The next prime is 2166144425129. The reversal of 2166144425117 is 7115244416612.

It can be written as a sum of positive squares in 4 ways, for example, as 169403035396 + 1996741389721 = 411586^2 + 1413061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2166144425117 - 2⁸ = 2166144424861 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 (2166144425111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1596767 + ... + 2623347.

It is an arithmetic number, because the mean of its divisors is an integer number (286698174759).

Almost surely, 2^{2166144425117} is an apocalyptic number.

It is an amenable number.

2166144425117 is a deficient number, since it is larger than the sum of its proper divisors (127440972955).

2166144425117 is a wasteful number, since it uses less digits than its factorization.

2166144425117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150719.

The product of its digits is 322560, while the sum is 44.

The spelling of 2166144425117 in words is "two trillion, one hundred sixty-six billion, one hundred forty-four million, four hundred twenty-five thousand, one hundred seventeen".