109131866872 has 16 divisors (see below), whose sum is σ = 233854000560. Its totient is φ = 46770800064.

The previous prime is 109131866861. The next prime is 109131866897. The reversal of 109131866872 is 278668131901.

109131866872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974391613 + ... + 974391724.

It is an arithmetic number, because the mean of its divisors is an integer number (14615875035).

Almost surely, 2^109131866872 is an apocalyptic number.

It is an amenable number.

109131866872 is an abundant number, since it is smaller than the sum of its proper divisors (124722133688).

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

109131866872 is a wasteful number, since it uses less digits than its factorization.

109131866872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948783350 (or 1948783346 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 109131866872 in words is "one hundred nine billion, one hundred thirty-one million, eight hundred sixty-six thousand, eight hundred seventy-two".