9866668996692 has 18 divisors (see below), whose sum is σ = 24940746630618. Its totient is φ = 3288889665552.

The previous prime is 9866668996669. The next prime is 9866668996711. The reversal of 9866668996692 is 2966998666689.

It can be written as a sum of positive squares in only one way, i.e., 9581166859716 + 285502136976 = 3095346^2 + 534324^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137037069363 + ... + 137037069434.

Almost surely, 2^{9866668996692} is an apocalyptic number.

It is an amenable number.

9866668996692 is an abundant number, since it is smaller than the sum of its proper divisors (15074077633926).

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

9866668996692 is a wasteful number, since it uses less digits than its factorization.

9866668996692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274074138807 (or 274074138802 counting only the distinct ones).

The product of its digits is 39182082048, while the sum is 90.

The spelling of 9866668996692 in words is "nine trillion, eight hundred sixty-six billion, six hundred sixty-eight million, nine hundred ninety-six thousand, six hundred ninety-two".