9999111627911 has 16 divisors (see below), whose sum is σ = 11681334798336. Its totient is φ = 8380665594816.

The previous prime is 9999111627887. The next prime is 9999111627937. The reversal of 9999111627911 is 1197261119999.

It is a cyclic number.

It is not a de Polignac number, because 9999111627911 - 2¹⁰ = 9999111626887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999111627961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13491611 + ... + 14213436.

It is an arithmetic number, because the mean of its divisors is an integer number (730083424896).

Almost surely, 2^{9999111627911} is an apocalyptic number.

9999111627911 is a deficient number, since it is larger than the sum of its proper divisors (1682223170425).

9999111627911 is a wasteful number, since it uses less digits than its factorization.

9999111627911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27706198.

The product of its digits is 4960116, while the sum is 65.

The spelling of 9999111627911 in words is "nine trillion, nine hundred ninety-nine billion, one hundred eleven million, six hundred twenty-seven thousand, nine hundred eleven".