111660011575 has 48 divisors (see below), whose sum is σ = 167970124224. Its totient is φ = 71880652800.

The previous prime is 111660011543. The next prime is 111660011581. The reversal of 111660011575 is 575110066111.

It is a happy number.

It is not a de Polignac number, because 111660011575 - 2⁵ = 111660011543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111660011575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1133805 + ... + 1228345.

It is an arithmetic number, because the mean of its divisors is an integer number (3499377588).

Almost surely, 2^111660011575 is an apocalyptic number.

111660011575 is a deficient number, since it is larger than the sum of its proper divisors (56310112649).

111660011575 is a wasteful number, since it uses less digits than its factorization.

111660011575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94972 (or 94967 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 34.

Adding to 111660011575 its reverse (575110066111), we get a palindrome (686770077686).

The spelling of 111660011575 in words is "one hundred eleven billion, six hundred sixty million, eleven thousand, five hundred seventy-five".