11111112345677 has 2 divisors, whose sum is σ = 11111112345678. Its totient is φ = 11111112345676.

The previous prime is 11111112345659. The next prime is 11111112345701. The reversal of 11111112345677 is 77654321111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5611834082761 + 5499278262916 = 2368931^2 + 2345054^2 .

It is an emirp because it is prime and its reverse (77654321111111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11111112345677 - 2²² = 11111108151373 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111112341677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555556172838 + 5555556172839.

It is an arithmetic number, because the mean of its divisors is an integer number (5555556172839).

Almost surely, 2^{11111112345677} is an apocalyptic number.

It is an amenable number.

11111112345677 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111112345677 is an equidigital number, since it uses as much as digits as its factorization.

11111112345677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 41.

Adding to 11111112345677 its reverse (77654321111111), we get a palindrome (88765433456788).

The spelling of 11111112345677 in words is "eleven trillion, one hundred eleven billion, one hundred twelve million, three hundred forty-five thousand, six hundred seventy-seven".