111668654593 has 8 divisors (see below), whose sum is σ = 111840580800. Its totient is φ = 111496786128.

The previous prime is 111668654557. The next prime is 111668654623. The reversal of 111668654593 is 395456866111.

It is a happy number.

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-111668654593 is a prime.

It is a super-2 number, since 2×111668654593² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111668651593) 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, 5331780 + ... + 5352682.

It is an arithmetic number, because the mean of its divisors is an integer number (13980072600).

Almost surely, 2^111668654593 is an apocalyptic number.

It is an amenable number.

111668654593 is a deficient number, since it is larger than the sum of its proper divisors (171926207).

111668654593 is an equidigital number, since it uses as much as digits as its factorization.

111668654593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28871.

The product of its digits is 4665600, while the sum is 55.

The spelling of 111668654593 in words is "one hundred eleven billion, six hundred sixty-eight million, six hundred fifty-four thousand, five hundred ninety-three".