111718081868 has 6 divisors (see below), whose sum is σ = 195506643276. Its totient is φ = 55859040932.

The previous prime is 111718081801. The next prime is 111718081901. The reversal of 111718081868 is 868180817111.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13964760230 + ... + 13964760237.

It is an arithmetic number, because the mean of its divisors is an integer number (32584440546).

Almost surely, 2^111718081868 is an apocalyptic number.

It is an amenable number.

111718081868 is a deficient number, since it is larger than the sum of its proper divisors (83788561408).

111718081868 is a wasteful number, since it uses less digits than its factorization.

111718081868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27929520471 (or 27929520469 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 50.

Adding to 111718081868 its reverse (868180817111), we get a palindrome (979898898979).

The spelling of 111718081868 in words is "one hundred eleven billion, seven hundred eighteen million, eighty-one thousand, eight hundred sixty-eight".