9872116623 has 20 divisors (see below), whose sum is σ = 14755336288. Its totient is φ = 6577796160.

The previous prime is 9872116621. The next prime is 9872116627. The reversal of 9872116623 is 3266112789.

9872116623 is a `hidden beast` number, since 9 + 8 + 7 + 2 + 1 + 16 + 623 = 666.

9872116623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9872116623 - 2¹ = 9872116621 is a prime.

It is a super-2 number, since 2×9872116623² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872116621) 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 19 ways as a sum of consecutive naturals, for example, 119178 + ... + 184248.

Almost surely, 2^9872116623 is an apocalyptic number.

9872116623 is a deficient number, since it is larger than the sum of its proper divisors (4883219665).

9872116623 is a wasteful number, since it uses less digits than its factorization.

9872116623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66956 (or 66947 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 9872116623 is about 99358.5256684096. The cubic root of 9872116623 is about 2145.2113811931.

The spelling of 9872116623 in words is "nine billion, eight hundred seventy-two million, one hundred sixteen thousand, six hundred twenty-three".