109807389666 has 48 divisors (see below), whose sum is σ = 265706785344. Its totient is φ = 33786887184.

The previous prime is 109807389647. The next prime is 109807389683. The reversal of 109807389666 is 666983708901.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8683726 + ... + 8696361.

It is an arithmetic number, because the mean of its divisors is an integer number (5535558028).

Almost surely, 2^109807389666 is an apocalyptic number.

109807389666 is an abundant number, since it is smaller than the sum of its proper divisors (155899395678).

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

109807389666 is a wasteful number, since it uses less digits than its factorization.

109807389666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17380117 (or 17380105 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 109807389666 in words is "one hundred nine billion, eight hundred seven million, three hundred eighty-nine thousand, six hundred sixty-six".