111165500505 has 32 divisors (see below), whose sum is σ = 181680652800. Its totient is φ = 58016754432.

The previous prime is 111165500449. The next prime is 111165500533. The reversal of 111165500505 is 505005561111.

It is not a de Polignac number, because 111165500505 - 2¹⁹ = 111164976217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5820111 + ... + 5839179.

It is an arithmetic number, because the mean of its divisors is an integer number (5677520400).

Almost surely, 2^111165500505 is an apocalyptic number.

111165500505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111165500505 is a deficient number, since it is larger than the sum of its proper divisors (70515152295).

111165500505 is a wasteful number, since it uses less digits than its factorization.

111165500505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27393.

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 111165500505 in words is "one hundred eleven billion, one hundred sixty-five million, five hundred thousand, five hundred five".