9983115655 has 4 divisors (see below), whose sum is σ = 11979738792. Its totient is φ = 7986492520.

The previous prime is 9983115647. The next prime is 9983115677. The reversal of 9983115655 is 5565113899.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9983115655 - 2³ = 9983115647 is a prime.

It is a super-2 number, since 2×9983115655² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998311561 + ... + 998311570.

It is an arithmetic number, because the mean of its divisors is an integer number (2994934698).

Almost surely, 2^9983115655 is an apocalyptic number.

9983115655 is a deficient number, since it is larger than the sum of its proper divisors (1996623137).

9983115655 is a wasteful number, since it uses less digits than its factorization.

9983115655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996623136.

The product of its digits is 1458000, while the sum is 52.

The square root of 9983115655 is about 99915.5426097462. The cubic root of 9983115655 is about 2153.2214663397.

The spelling of 9983115655 in words is "nine billion, nine hundred eighty-three million, one hundred fifteen thousand, six hundred fifty-five".