111727617655 has 8 divisors (see below), whose sum is σ = 134074985184. Its totient is φ = 89380864800.

The previous prime is 111727617653. The next prime is 111727617671. The reversal of 111727617655 is 556716727111.

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

It is not a de Polignac number, because 111727617655 - 2¹ = 111727617653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111727617599 and 111727617608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111727617653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495670 + ... + 684940.

It is an arithmetic number, because the mean of its divisors is an integer number (16759373148).

Almost surely, 2^111727617655 is an apocalyptic number.

111727617655 is a deficient number, since it is larger than the sum of its proper divisors (22347367529).

111727617655 is a wasteful number, since it uses less digits than its factorization.

111727617655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307337.

The product of its digits is 617400, while the sum is 49.

The spelling of 111727617655 in words is "one hundred eleven billion, seven hundred twenty-seven million, six hundred seventeen thousand, six hundred fifty-five".