9623645788736 has 280 divisors, whose sum is σ = 23263179808320. Its totient is φ = 3944785990656.

The previous prime is 9623645788699. The next prime is 9623645788741. The reversal of 9623645788736 is 6378875463269.

It is a happy number.

It is a super-2 number, since 2×9623645788736² (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 (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 476809301 + ... + 476829483.

Almost surely, 2^{9623645788736} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9623645788736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11631589904160).

9623645788736 is an abundant number, since it is smaller than the sum of its proper divisors (13639534019584).

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

9623645788736 is a wasteful number, since it uses less digits than its factorization.

9623645788736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20359 (or 20328 counting only the distinct ones).

The product of its digits is 2194698240, while the sum is 74.

The spelling of 9623645788736 in words is "nine trillion, six hundred twenty-three billion, six hundred forty-five million, seven hundred eighty-eight thousand, seven hundred thirty-six".