111540085287489 has 20 divisors (see below), whose sum is σ = 173866026666816. Its totient is φ = 71127010906776.

The previous prime is 111540085287377. The next prime is 111540085287541. The reversal of 111540085287489 is 984782580045111.

111540085287489 is a `hidden beast` number, since 1 + 1 + 1 + 5 + 400 + 85 + 2 + 8 + 74 + 89 = 666.

It is not a de Polignac number, because 111540085287489 - 2⁷ = 111540085287361 is a prime.

It is a super-3 number, since 3×111540085287489³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111540085287289) 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 19 ways as a sum of consecutive naturals, for example, 29935608789 + ... + 29935612514.

Almost surely, 2^{111540085287489} is an apocalyptic number.

It is an amenable number.

111540085287489 is a deficient number, since it is larger than the sum of its proper divisors (62325941379327).

111540085287489 is an equidigital number, since it uses as much as digits as its factorization.

111540085287489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59871221338 (or 59871221329 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 63.

The spelling of 111540085287489 in words is "one hundred eleven trillion, five hundred forty billion, eighty-five million, two hundred eighty-seven thousand, four hundred eighty-nine".