10991189110 has 16 divisors (see below), whose sum is σ = 21582698832. Its totient is φ = 3996796000.

The previous prime is 10991189093. The next prime is 10991189137. The reversal of 10991189110 is 1198119901.

It is a congruent number.

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, 49959841 + ... + 49960060.

It is an arithmetic number, because the mean of its divisors is an integer number (1348918677).

Almost surely, 2^10991189110 is an apocalyptic number.

10991189110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10991189110 is a deficient number, since it is larger than the sum of its proper divisors (10591509722).

10991189110 is a wasteful number, since it uses less digits than its factorization.

10991189110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99919919.

The product of its (nonzero) digits is 5832, while the sum is 40.

The spelling of 10991189110 in words is "ten billion, nine hundred ninety-one million, one hundred eighty-nine thousand, one hundred ten".