1666129098194 has 16 divisors (see below), whose sum is σ = 2728518130080. Its totient is φ = 756741113760.

The previous prime is 1666129098103. The next prime is 1666129098199. The reversal of 1666129098194 is 4918909216661.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 29485859 + ... + 29542310.

It is an arithmetic number, because the mean of its divisors is an integer number (170532383130).

Almost surely, 2^{1666129098194} is an apocalyptic number.

1666129098194 is a deficient number, since it is larger than the sum of its proper divisors (1062389031886).

1666129098194 is a wasteful number, since it uses less digits than its factorization.

1666129098194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59029465.

The product of its (nonzero) digits is 10077696, while the sum is 62.

The spelling of 1666129098194 in words is "one trillion, six hundred sixty-six billion, one hundred twenty-nine million, ninety-eight thousand, one hundred ninety-four".