9686790994321 has 9 divisors (see below), whose sum is σ = 11268333234921. Its totient is φ = 8302945035252.

The previous prime is 9686790994301. The next prime is 9686790994451. The reversal of 9686790994321 is 1234990976869.

The square root of 9686790994321 is 3112361.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 9686790994321 - 2¹³ = 9686790986129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9686790994301) 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 8 ways as a sum of consecutive naturals, for example, 21564216 + ... + 22008838.

Almost surely, 2^{9686790994321} is an apocalyptic number.

9686790994321 is the 3112361-st square number.

9686790994321 is the 1556181-st centered octagonal number.

It is an amenable number.

9686790994321 is a deficient number, since it is larger than the sum of its proper divisors (1581542240600).

9686790994321 is an frugal number, since it uses more digits than its factorization.

9686790994321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889260 (or 444630 counting only the distinct ones).

The product of its (nonzero) digits is 317447424, while the sum is 73.

The spelling of 9686790994321 in words is "nine trillion, six hundred eighty-six billion, seven hundred ninety million, nine hundred ninety-four thousand, three hundred twenty-one".