It is a sphenic number, since it is the product of 3 distinct primes.
9901691066 is a strobogrammatic number because it is the same when read upside-down.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 9901691066.
It is an unprimeable number.
Almost surely, 29901691066 is an apocalyptic number.
9901691066 is a wasteful number, since it uses less digits than its factorization.
9901691066 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 105337188.
The square root of 9901691066 is about 99507.2412741907. The cubic root of 9901691066 is about 2147.3514215278.
The spelling of 9901691066 in words is "nine billion, nine hundred one million, six hundred ninety-one thousand, sixty-six".