9887663111 has 2 divisors, whose sum is σ = 9887663112. Its totient is φ = 9887663110.

The previous prime is 9887663101. The next prime is 9887663161. The reversal of 9887663111 is 1113667889.

It is an a-pointer prime, because the next prime (9887663161) can be obtained adding 9887663111 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9887663111 - 2¹⁸ = 9887400967 is a prime.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9887663111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9887663101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4943831555 + 4943831556.

It is an arithmetic number, because the mean of its divisors is an integer number (4943831556).

Almost surely, 2^9887663111 is an apocalyptic number.

9887663111 is a deficient number, since it is larger than the sum of its proper divisors (1).

9887663111 is an equidigital number, since it uses as much as digits as its factorization.

9887663111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 50.

The square root of 9887663111 is about 99436.7291849445. The cubic root of 9887663111 is about 2146.3368747731.

The spelling of 9887663111 in words is "nine billion, eight hundred eighty-seven million, six hundred sixty-three thousand, one hundred eleven".