111552322181816 has 32 divisors (see below), whose sum is σ = 210966129277200. Its totient is φ = 55295531665920.

The previous prime is 111552322181791. The next prime is 111552322181819. The reversal of 111552322181816 is 618181223255111.

It is a super-2 number, since 2×111552322181816² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111552322181819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51689375 + ... + 53804238.

Almost surely, 2^{111552322181816} is an apocalyptic number.

It is an amenable number.

111552322181816 is a deficient number, since it is larger than the sum of its proper divisors (99413807095384).

111552322181816 is a wasteful number, since it uses less digits than its factorization.

111552322181816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105494759 (or 105494755 counting only the distinct ones).

The product of its digits is 230400, while the sum is 47.

The spelling of 111552322181816 in words is "one hundred eleven trillion, five hundred fifty-two billion, three hundred twenty-two million, one hundred eighty-one thousand, eight hundred sixteen".