9988886555 has 8 divisors (see below), whose sum is σ = 12022879344. Its totient is φ = 7966965600.

The previous prime is 9988886507. The next prime is 9988886603. The reversal of 9988886555 is 5556888899.

It is an interprime number because it is at equal distance from previous prime (9988886507) and next prime (9988886603).

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

It is a de Polignac number, because none of the positive numbers 2^k-9988886555 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3016136 + ... + 3019445.

It is an arithmetic number, because the mean of its divisors is an integer number (1502859918).

Almost surely, 2^9988886555 is an apocalyptic number.

9988886555 is a deficient number, since it is larger than the sum of its proper divisors (2033992789).

9988886555 is a wasteful number, since it uses less digits than its factorization.

9988886555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6035917.

The product of its digits is 248832000, while the sum is 71.

The square root of 9988886555 is about 99944.4173278328. The cubic root of 9988886555 is about 2153.6362878110.

The spelling of 9988886555 in words is "nine billion, nine hundred eighty-eight million, eight hundred eighty-six thousand, five hundred fifty-five".