109209507111 has 12 divisors (see below), whose sum is σ = 157754981592. Its totient is φ = 72802684656.

The previous prime is 109209507103. The next prime is 109209507191. The reversal of 109209507111 is 111705902901.

109209507111 is a `hidden beast` number, since 10 + 9 + 20 + 9 + 507 + 111 = 666.

It is not a de Polignac number, because 109209507111 - 2³ = 109209507103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109209507191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108496 + ... + 479781.

It is an arithmetic number, because the mean of its divisors is an integer number (13146248466).

Almost surely, 2^109209507111 is an apocalyptic number.

109209507111 is a deficient number, since it is larger than the sum of its proper divisors (48545474481).

109209507111 is a wasteful number, since it uses less digits than its factorization.

109209507111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608910 (or 608907 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 36.

The spelling of 109209507111 in words is "one hundred nine billion, two hundred nine million, five hundred seven thousand, one hundred eleven".