111161345105 has 16 divisors (see below), whose sum is σ = 135678412800. Its totient is φ = 87406408320.

The previous prime is 111161345093. The next prime is 111161345111. The reversal of 111161345105 is 501543161111.

It is not a de Polignac number, because 111161345105 - 2²² = 111157150801 is a prime.

It is a super-3 number, since 3×111161345105³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819901 + ... + 1879989.

It is an arithmetic number, because the mean of its divisors is an integer number (8479900800).

Almost surely, 2^111161345105 is an apocalyptic number.

It is an amenable number.

111161345105 is a deficient number, since it is larger than the sum of its proper divisors (24517067695).

111161345105 is an equidigital number, since it uses as much as digits as its factorization.

111161345105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66424.

The product of its (nonzero) digits is 1800, while the sum is 29.

The spelling of 111161345105 in words is "one hundred eleven billion, one hundred sixty-one million, three hundred forty-five thousand, one hundred five".