61061660551673 has 2 divisors, whose sum is σ = 61061660551674. Its totient is φ = 61061660551672.

The previous prime is 61061660551637. The next prime is 61061660551687. The reversal of 61061660551673 is 37615506616016.

It is a happy number.

61061660551673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (61061660551637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51241158673849 + 9820501877824 = 7158293^2 + 3133768^2 .

It is a cyclic number.

It is not a de Polignac number, because 61061660551673 - 2²⁴ = 61061643774457 is a prime.

It is not a weakly prime, because it can be changed into another prime (61061660551603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30530830275836 + 30530830275837.

It is an arithmetic number, because the mean of its divisors is an integer number (30530830275837).

Almost surely, 2^{61061660551673} is an apocalyptic number.

It is an amenable number.

61061660551673 is a deficient number, since it is larger than the sum of its proper divisors (1).

61061660551673 is an equidigital number, since it uses as much as digits as its factorization.

61061660551673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 61061660551673 in words is "sixty-one trillion, sixty-one billion, six hundred sixty million, five hundred fifty-one thousand, six hundred seventy-three".