111506160506 has 16 divisors (see below), whose sum is σ = 180437536104. Its totient is φ = 51375181824.

The previous prime is 111506160473. The next prime is 111506160581. The reversal of 111506160506 is 605061605111.

It can be written as a sum of positive squares in 4 ways, for example, as 81770262025 + 29735898481 = 285955^2 + 172441^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3701375 + ... + 3731378.

Almost surely, 2^111506160506 is an apocalyptic number.

111506160506 is a deficient number, since it is larger than the sum of its proper divisors (68931375598).

111506160506 is a wasteful number, since it uses less digits than its factorization.

111506160506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433345.

The product of its (nonzero) digits is 5400, while the sum is 32.

Adding to 111506160506 its reverse (605061605111), we get a palindrome (716567765617).

The spelling of 111506160506 in words is "one hundred eleven billion, five hundred six million, one hundred sixty thousand, five hundred six".