1666866705034 has 32 divisors (see below), whose sum is σ = 2525222466000. Its totient is φ = 825166540800.

The previous prime is 1666866704983. The next prime is 1666866705059. The reversal of 1666866705034 is 4305076686661.

It can be written as a sum of positive squares in 8 ways, for example, as 1068231803809 + 598634901225 = 1033553^2 + 773715^2 .

It is a super-2 number, since 2×1666866705034² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1666866705034.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120527232 + ... + 120541060.

Almost surely, 2^{1666866705034} is an apocalyptic number.

1666866705034 is a deficient number, since it is larger than the sum of its proper divisors (858355760966).

1666866705034 is a wasteful number, since it uses less digits than its factorization.

1666866705034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15258.

The product of its (nonzero) digits is 26127360, while the sum is 58.

The spelling of 1666866705034 in words is "one trillion, six hundred sixty-six billion, eight hundred sixty-six million, seven hundred five thousand, thirty-four".