1666633294086 has 36 divisors (see below), whose sum is σ = 3518061924492. Its totient is φ = 526286277288.

The previous prime is 1666633294069. The next prime is 1666633294133. The reversal of 1666633294086 is 6804923366661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 60068805 + ... + 60096543.

It is an arithmetic number, because the mean of its divisors is an integer number (97723942347).

Almost surely, 2^{1666633294086} is an apocalyptic number.

1666633294086 is an abundant number, since it is smaller than the sum of its proper divisors (1851428630406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1666633294086 is an frugal number, since it uses more digits than its factorization.

1666633294086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55521 (or 27763 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 60.

The spelling of 1666633294086 in words is "one trillion, six hundred sixty-six billion, six hundred thirty-three million, two hundred ninety-four thousand, eighty-six".