61061042720611 has 2 divisors, whose sum is σ = 61061042720612. Its totient is φ = 61061042720610.

The previous prime is 61061042720609. The next prime is 61061042720701. The reversal of 61061042720611 is 11602724016016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61061042720611 - 2¹ = 61061042720609 is a prime.

Together with 61061042720609, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61061042720911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30530521360305 + 30530521360306.

It is an arithmetic number, because the mean of its divisors is an integer number (30530521360306).

Almost surely, 2^{61061042720611} is an apocalyptic number.

61061042720611 is a deficient number, since it is larger than the sum of its proper divisors (1).

61061042720611 is an equidigital number, since it uses as much as digits as its factorization.

61061042720611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

Adding to 61061042720611 its reverse (11602724016016), we get a palindrome (72663766736627).

The spelling of 61061042720611 in words is "sixty-one trillion, sixty-one billion, forty-two million, seven hundred twenty thousand, six hundred eleven".