9661810645068 has 24 divisors (see below), whose sum is σ = 22544363304960. Its totient is φ = 3220583767440.

The previous prime is 9661810645057. The next prime is 9661810645087. The reversal of 9661810645068 is 8605460181669.

It is a super-2 number, since 2×9661810645068² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365628 + ... + 4411043.

It is an arithmetic number, because the mean of its divisors is an integer number (939348471040).

Almost surely, 2^{9661810645068} is an apocalyptic number.

It is an amenable number.

9661810645068 is an abundant number, since it is smaller than the sum of its proper divisors (12882552659892).

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

9661810645068 is a wasteful number, since it uses less digits than its factorization.

9661810645068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945237 (or 4945235 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 60.

The spelling of 9661810645068 in words is "nine trillion, six hundred sixty-one billion, eight hundred ten million, six hundred forty-five thousand, sixty-eight".