611153111111 has 2 divisors, whose sum is σ = 611153111112. Its totient is φ = 611153111110.

The previous prime is 611153111071. The next prime is 611153111201. The reversal of 611153111111 is 111111351116.

It is a happy number.

It is a m-pointer prime, because the next prime (611153111201) can be obtained adding 611153111111 to its product of digits (90).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611153111111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611153116111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305576555555 + 305576555556.

It is an arithmetic number, because the mean of its divisors is an integer number (305576555556).

Almost surely, 2^611153111111 is an apocalyptic number.

611153111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

611153111111 is an equidigital number, since it uses as much as digits as its factorization.

611153111111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90, while the sum is 23.

Adding to 611153111111 its reverse (111111351116), we get a palindrome (722264462227).

The spelling of 611153111111 in words is "six hundred eleven billion, one hundred fifty-three million, one hundred eleven thousand, one hundred eleven".