111555640106 has 16 divisors (see below), whose sum is σ = 174819513600. Its totient is φ = 53288321328.

The previous prime is 111555640039. The next prime is 111555640117. The reversal of 111555640106 is 601046555111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1424546 + ... + 1500813.

It is an arithmetic number, because the mean of its divisors is an integer number (10926219600).

Almost surely, 2^111555640106 is an apocalyptic number.

111555640106 is a deficient number, since it is larger than the sum of its proper divisors (63263873494).

111555640106 is a wasteful number, since it uses less digits than its factorization.

111555640106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926213.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 111555640106 in words is "one hundred eleven billion, five hundred fifty-five million, six hundred forty thousand, one hundred six".