9666598661298 has 24 divisors (see below), whose sum is σ = 20946824790528. Its totient is φ = 3221810678232.

The previous prime is 9666598661297. The next prime is 9666598661351. The reversal of 9666598661298 is 8921668956669.

It is not an unprimeable number, because it can be changed into a prime (9666598661297) 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 11 ways as a sum of consecutive naturals, for example, 32252986 + ... + 32551317.

It is an arithmetic number, because the mean of its divisors is an integer number (872784366272).

Almost surely, 2^{9666598661298} is an apocalyptic number.

9666598661298 is an abundant number, since it is smaller than the sum of its proper divisors (11280226129230).

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

9666598661298 is a wasteful number, since it uses less digits than its factorization.

9666598661298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64812598 (or 64812595 counting only the distinct ones).

The product of its digits is 3627970560, while the sum is 81.

The spelling of 9666598661298 in words is "nine trillion, six hundred sixty-six billion, five hundred ninety-eight million, six hundred sixty-one thousand, two hundred ninety-eight".