2166144425199 has 48 divisors (see below), whose sum is σ = 3154344560640. Its totient is φ = 1432392635520.

The previous prime is 2166144425129. The next prime is 2166144425227. The reversal of 2166144425199 is 9915244416612.

2166144425199 is a `hidden beast` number, since 2 + 1 + 6 + 6 + 1 + 4 + 442 + 5 + 199 = 666.

It is not a de Polignac number, because 2166144425199 - 2⁹ = 2166144424687 is a prime.

It is a super-2 number, since 2×2166144425199² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166144425129) 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 47 ways as a sum of consecutive naturals, for example, 1346266707 + ... + 1346268315.

It is an arithmetic number, because the mean of its divisors is an integer number (65715511680).

Almost surely, 2^{2166144425199} is an apocalyptic number.

2166144425199 is a deficient number, since it is larger than the sum of its proper divisors (988200135441).

2166144425199 is a wasteful number, since it uses less digits than its factorization.

2166144425199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580 (or 3577 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 2166144425199 in words is "two trillion, one hundred sixty-six billion, one hundred forty-four million, four hundred twenty-five thousand, one hundred ninety-nine".