109191011000 has 64 divisors (see below), whose sum is σ = 260943396480. Its totient is φ = 42747100800.

The previous prime is 109191010997. The next prime is 109191011021. The reversal of 109191011000 is 110191901.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114607 + ... + 1208606.

It is an arithmetic number, because the mean of its divisors is an integer number (4077240570).

Almost surely, 2^109191011000 is an apocalyptic number.

109191011000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109191011000 is an abundant number, since it is smaller than the sum of its proper divisors (151752385480).

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

109191011000 is a wasteful number, since it uses less digits than its factorization.

109191011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323281 (or 2323267 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 109191011000 in words is "one hundred nine billion, one hundred ninety-one million, eleven thousand".