9996330766661 has 8 divisors (see below), whose sum is σ = 10228989924384. Its totient is φ = 9763680079440.

The previous prime is 9996330766621. The next prime is 9996330766729. The reversal of 9996330766661 is 1666670336999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9996330766661 - 2³⁸ = 9721452859717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996330766601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301910 + ... + 4481496.

It is an arithmetic number, because the mean of its divisors is an integer number (1278623740548).

Almost surely, 2^{9996330766661} is an apocalyptic number.

It is an amenable number.

9996330766661 is a deficient number, since it is larger than the sum of its proper divisors (232659157723).

9996330766661 is a wasteful number, since it uses less digits than its factorization.

9996330766661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235251.

The product of its (nonzero) digits is 357128352, while the sum is 71.

The spelling of 9996330766661 in words is "nine trillion, nine hundred ninety-six billion, three hundred thirty million, seven hundred sixty-six thousand, six hundred sixty-one".