9983642555 has 8 divisors (see below), whose sum is σ = 11982068592. Its totient is φ = 7985782368.

The previous prime is 9983642527. The next prime is 9983642657. The reversal of 9983642555 is 5552463899.

9983642555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9983642555 - 2¹⁸ = 9983380411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9983642555.

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, 101624 + ... + 174053.

It is an arithmetic number, because the mean of its divisors is an integer number (1497758574).

Almost surely, 2^9983642555 is an apocalyptic number.

9983642555 is a deficient number, since it is larger than the sum of its proper divisors (1998426037).

9983642555 is a wasteful number, since it uses less digits than its factorization.

9983642555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282925.

The product of its digits is 11664000, while the sum is 56.

The square root of 9983642555 is about 99918.1793018668. The cubic root of 9983642555 is about 2153.2593473804.

The spelling of 9983642555 in words is "nine billion, nine hundred eighty-three million, six hundred forty-two thousand, five hundred fifty-five".