1666129098196 has 12 divisors (see below), whose sum is σ = 3016268195220. Its totient is φ = 804338185280.

The previous prime is 1666129098103. The next prime is 1666129098199. The reversal of 1666129098196 is 6918909216661.

It can be written as a sum of positive squares in 2 ways, for example, as 719816496400 + 946312601796 = 848420^2 + 972786^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666129098199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7181590825 + ... + 7181591056.

It is an arithmetic number, because the mean of its divisors is an integer number (251355682935).

Almost surely, 2^{1666129098196} is an apocalyptic number.

It is an amenable number.

1666129098196 is a deficient number, since it is larger than the sum of its proper divisors (1350139097024).

1666129098196 is a wasteful number, since it uses less digits than its factorization.

1666129098196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14363181914 (or 14363181912 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 64.

The spelling of 1666129098196 in words is "one trillion, six hundred sixty-six billion, one hundred twenty-nine million, ninety-eight thousand, one hundred ninety-six".