111720755017 has 8 divisors (see below), whose sum is σ = 112957703936. Its totient is φ = 110485544832.

The previous prime is 111720755009. The next prime is 111720755033. The reversal of 111720755017 is 710557027111.

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 111720755017 - 2³ = 111720755009 is a prime.

It is a super-3 number, since 3×111720755017³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111720755717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305253 + ... + 562690.

It is an arithmetic number, because the mean of its divisors is an integer number (14119712992).

Almost surely, 2^111720755017 is an apocalyptic number.

It is an amenable number.

111720755017 is a deficient number, since it is larger than the sum of its proper divisors (1236948919).

111720755017 is an equidigital number, since it uses as much as digits as its factorization.

111720755017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869367.

The product of its (nonzero) digits is 17150, while the sum is 37.

The spelling of 111720755017 in words is "one hundred eleven billion, seven hundred twenty million, seven hundred fifty-five thousand, seventeen".