9900000066 has 16 divisors (see below), whose sum is σ = 21600000288. Its totient is φ = 3000000000.

The previous prime is 9900000043. The next prime is 9900000079. The reversal of 9900000066 is 6600000099.

9900000066 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9899999979 and 9900000042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74999935 + ... + 75000066.

It is an arithmetic number, because the mean of its divisors is an integer number (1350000018).

Almost surely, 2^9900000066 is an apocalyptic number.

9900000066 is an abundant number, since it is smaller than the sum of its proper divisors (11700000222).

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

9900000066 is a wasteful number, since it uses less digits than its factorization.

9900000066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150000017.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 9900000066 is about 99498.7440423245. The cubic root of 9900000066 is about 2147.2291737906.

The spelling of 9900000066 in words is "nine billion, nine hundred million, sixty-six", and thus it is an aban number.