111118402687 has 4 divisors (see below), whose sum is σ = 111732316696. Its totient is φ = 110504488680.

The previous prime is 111118402673. The next prime is 111118402697. The reversal of 111118402687 is 786204811111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786204811111 = 88117 ⋅8922283.

It is a cyclic number.

It is not a de Polignac number, because 111118402687 - 2¹¹ = 111118400639 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 (111118402697) 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, 306956733 + ... + 306957094.

It is an arithmetic number, because the mean of its divisors is an integer number (27933079174).

Almost surely, 2^111118402687 is an apocalyptic number.

111118402687 is a deficient number, since it is larger than the sum of its proper divisors (613914009).

111118402687 is an equidigital number, since it uses as much as digits as its factorization.

111118402687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613914008.

The product of its (nonzero) digits is 21504, while the sum is 40.

The spelling of 111118402687 in words is "one hundred eleven billion, one hundred eighteen million, four hundred two thousand, six hundred eighty-seven".