1111345668889 has 2 divisors, whose sum is σ = 1111345668890. Its totient is φ = 1111345668888.

The previous prime is 1111345668887. The next prime is 1111345668899. The reversal of 1111345668889 is 9888665431111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998001000000 + 113344668889 = 999000^2 + 336667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111345668889 - 2¹ = 1111345668887 is a prime.

Together with 1111345668887, it forms a pair of twin primes.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1111345668887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555672834444 + 555672834445.

It is an arithmetic number, because the mean of its divisors is an integer number (555672834445).

Almost surely, 2^{1111345668889} is an apocalyptic number.

It is an amenable number.

1111345668889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111345668889 is an equidigital number, since it uses as much as digits as its factorization.

1111345668889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9953280, while the sum is 61.

The spelling of 1111345668889 in words is "one trillion, one hundred eleven billion, three hundred forty-five million, six hundred sixty-eight thousand, eight hundred eighty-nine".