9909672680 has 64 divisors (see below), whose sum is σ = 23525510400. Its totient is φ = 3746407680.

The previous prime is 9909672611. The next prime is 9909672683. The reversal of 9909672680 is 862769099.

9909672680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9909672680² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9909672683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 312434 + ... + 342686.

It is an arithmetic number, because the mean of its divisors is an integer number (367586100).

Almost surely, 2^9909672680 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 9909672680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11762755200).

9909672680 is an abundant number, since it is smaller than the sum of its proper divisors (13615837720).

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

9909672680 is a wasteful number, since it uses less digits than its factorization.

9909672680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30714 (or 30710 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 9909672680 is about 99547.3388895956. The cubic root of 9909672680 is about 2147.9282498311.

The spelling of 9909672680 in words is "nine billion, nine hundred nine million, six hundred seventy-two thousand, six hundred eighty".