611605061611 has 2 divisors, whose sum is σ = 611605061612. Its totient is φ = 611605061610.

The previous prime is 611605061603. The next prime is 611605061623. The reversal of 611605061611 is 116160506116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611605061611 - 2³ = 611605061603 is a prime.

It is not a weakly prime, because it can be changed into another prime (611605041611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305802530805 + 305802530806.

It is an arithmetic number, because the mean of its divisors is an integer number (305802530806).

Almost surely, 2^611605061611 is an apocalyptic number.

611605061611 is a deficient number, since it is larger than the sum of its proper divisors (1).

611605061611 is an equidigital number, since it uses as much as digits as its factorization.

611605061611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 34.

Adding to 611605061611 its reverse (116160506116), we get a palindrome (727765567727).

The spelling of 611605061611 in words is "six hundred eleven billion, six hundred five million, sixty-one thousand, six hundred eleven".