111666050516557 has 8 divisors (see below), whose sum is σ = 117543419690400. Its totient is φ = 105788702204784.

The previous prime is 111666050516497. The next prime is 111666050516611. The reversal of 111666050516557 is 755615050666111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111666050516557 - 2²⁷ = 111665916298829 is a prime.

It is a super-2 number, since 2×111666050516557² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111666050516498 and 111666050516507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111666050513557) 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, 6439194 + ... + 16272532.

It is an arithmetic number, because the mean of its divisors is an integer number (14692927461300).

Almost surely, 2^{111666050516557} is an apocalyptic number.

It is an amenable number.

111666050516557 is a deficient number, since it is larger than the sum of its proper divisors (5877369173843).

111666050516557 is an equidigital number, since it uses as much as digits as its factorization.

111666050516557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10431035.

The product of its (nonzero) digits is 5670000, while the sum is 55.

The spelling of 111666050516557 in words is "one hundred eleven trillion, six hundred sixty-six billion, fifty million, five hundred sixteen thousand, five hundred fifty-seven".