1666833333364 has 6 divisors (see below), whose sum is σ = 2916958333394. Its totient is φ = 833416666680.

The previous prime is 1666833333359. The next prime is 1666833333371. The reversal of 1666833333364 is 4633333386661.

It can be written as a sum of positive squares in only one way, i.e., 1433455452900 + 233377880464 = 1197270^2 + 483092^2 .

It is a super-2 number, since 2×1666833333364² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208354166667 + ... + 208354166674.

Almost surely, 2^{1666833333364} is an apocalyptic number.

It is an amenable number.

1666833333364 is a deficient number, since it is larger than the sum of its proper divisors (1250125000030).

1666833333364 is a wasteful number, since it uses less digits than its factorization.

1666833333364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416708333345 (or 416708333343 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 55.

The spelling of 1666833333364 in words is "one trillion, six hundred sixty-six billion, eight hundred thirty-three million, three hundred thirty-three thousand, three hundred sixty-four".