61055505611 has 2 divisors, whose sum is σ = 61055505612. Its totient is φ = 61055505610.

The previous prime is 61055505587. The next prime is 61055505619. The reversal of 61055505611 is 11650555016.

61055505611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61055505611 is a prime.

It is not a weakly prime, because it can be changed into another prime (61055505619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30527752805 + 30527752806.

It is an arithmetic number, because the mean of its divisors is an integer number (30527752806).

Almost surely, 2^61055505611 is an apocalyptic number.

61055505611 is a deficient number, since it is larger than the sum of its proper divisors (1).

61055505611 is an equidigital number, since it uses as much as digits as its factorization.

61055505611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 61055505611 in words is "sixty-one billion, fifty-five million, five hundred five thousand, six hundred eleven".