111680255593 has 8 divisors (see below), whose sum is σ = 114408553896. Its totient is φ = 108952166400.

The previous prime is 111680255581. The next prime is 111680255623. The reversal of 111680255593 is 395552086111.

It can be written as a sum of positive squares in 4 ways, for example, as 9962634969 + 101717620624 = 99813^2 + 318932^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111680255593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111680255293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007513 + ... + 2062393.

It is an arithmetic number, because the mean of its divisors is an integer number (14301069237).

Almost surely, 2^111680255593 is an apocalyptic number.

It is an amenable number.

111680255593 is a deficient number, since it is larger than the sum of its proper divisors (2728298303).

111680255593 is an equidigital number, since it uses as much as digits as its factorization.

111680255593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104555.

The product of its (nonzero) digits is 324000, while the sum is 46.

The spelling of 111680255593 in words is "one hundred eleven billion, six hundred eighty million, two hundred fifty-five thousand, five hundred ninety-three".