61700616611 has 2 divisors, whose sum is σ = 61700616612. Its totient is φ = 61700616610.

The previous prime is 61700616479. The next prime is 61700616613. The reversal of 61700616611 is 11661600716.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61700616611 is a prime.

It is a Sophie Germain prime.

Together with 61700616613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61700616613) 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, 30850308305 + 30850308306.

It is an arithmetic number, because the mean of its divisors is an integer number (30850308306).

Almost surely, 2^61700616611 is an apocalyptic number.

61700616611 is a deficient number, since it is larger than the sum of its proper divisors (1).

61700616611 is an equidigital number, since it uses as much as digits as its factorization.

61700616611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 61700616611 in words is "sixty-one billion, seven hundred million, six hundred sixteen thousand, six hundred eleven".