9642723356566 has 8 divisors (see below), whose sum is σ = 14464162736280. Its totient is φ = 4821335777808.

The previous prime is 9642723356503. The next prime is 9642723356573. The reversal of 9642723356566 is 6656533272469.

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

It is a super-2 number, since 2×9642723356566² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9642723356498 and 9642723356507.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12481471 + ... + 13231498.

It is an arithmetic number, because the mean of its divisors is an integer number (1808020342035).

Almost surely, 2^{9642723356566} is an apocalyptic number.

9642723356566 is a deficient number, since it is larger than the sum of its proper divisors (4821439379714).

9642723356566 is a wasteful number, since it uses less digits than its factorization.

9642723356566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25900478.

The product of its digits is 293932800, while the sum is 64.

The spelling of 9642723356566 in words is "nine trillion, six hundred forty-two billion, seven hundred twenty-three million, three hundred fifty-six thousand, five hundred sixty-six".