111601615655650 has 12 divisors (see below), whose sum is σ = 207579005119602. Its totient is φ = 44640646262240.

The previous prime is 111601615655641. The next prime is 111601615655683. The reversal of 111601615655650 is 56556516106111.

It can be written as a sum of positive squares in 3 ways, for example, as 105616708446001 + 5984907209649 = 10276999^2 + 2446407^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111601615655594 and 111601615655603.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1116016156507 + ... + 1116016156606.

Almost surely, 2^{111601615655650} is an apocalyptic number.

111601615655650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111601615655650 is a deficient number, since it is larger than the sum of its proper divisors (95977389463952).

111601615655650 is a wasteful number, since it uses less digits than its factorization.

111601615655650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232032313125 (or 2232032313120 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 49.

The spelling of 111601615655650 in words is "one hundred eleven trillion, six hundred one billion, six hundred fifteen million, six hundred fifty-five thousand, six hundred fifty".