1666666833434 has 16 divisors (see below), whose sum is σ = 2508285696000. Its totient is φ = 830573739504.

The previous prime is 1666666833427. The next prime is 1666666833439. The reversal of 1666666833434 is 4343386666661.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1666666833439) 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, 1029599 + ... + 2096045.

It is an arithmetic number, because the mean of its divisors is an integer number (156767856000).

Almost surely, 2^{1666666833434} is an apocalyptic number.

1666666833434 is a deficient number, since it is larger than the sum of its proper divisors (841618862566).

1666666833434 is a wasteful number, since it uses less digits than its factorization.

1666666833434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069037.

The product of its digits is 161243136, while the sum is 62.

The spelling of 1666666833434 in words is "one trillion, six hundred sixty-six billion, six hundred sixty-six million, eight hundred thirty-three thousand, four hundred thirty-four".