111660511007 has 4 divisors (see below), whose sum is σ = 111925738296. Its totient is φ = 111395283720.

The previous prime is 111660510971. The next prime is 111660511063. The reversal of 111660511007 is 700115066111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111660511007 - 2³² = 107365543711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111660511607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132613013 + ... + 132613854.

It is an arithmetic number, because the mean of its divisors is an integer number (27981434574).

Almost surely, 2^111660511007 is an apocalyptic number.

111660511007 is a deficient number, since it is larger than the sum of its proper divisors (265227289).

111660511007 is an equidigital number, since it uses as much as digits as its factorization.

111660511007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265227288.

The product of its (nonzero) digits is 1260, while the sum is 29.

Adding to 111660511007 its reverse (700115066111), we get a palindrome (811775577118).

The spelling of 111660511007 in words is "one hundred eleven billion, six hundred sixty million, five hundred eleven thousand, seven".