10991190100 has 72 divisors (see below), whose sum is σ = 26035708608. Its totient is φ = 3994252800.

The previous prime is 10991190079. The next prime is 10991190103. The reversal of 10991190100 is 109119901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10991190103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3114537 + ... + 3118063.

It is an arithmetic number, because the mean of its divisors is an integer number (361607064).

Almost surely, 2^10991190100 is an apocalyptic number.

10991190100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10991190100 is an abundant number, since it is smaller than the sum of its proper divisors (15044518508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10991190100 is a wasteful number, since it uses less digits than its factorization.

10991190100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6385 (or 6378 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 10991190100 in words is "ten billion, nine hundred ninety-one million, one hundred ninety thousand, one hundred".