61316335177 has 2 divisors, whose sum is σ = 61316335178. Its totient is φ = 61316335176.

The previous prime is 61316335153. The next prime is 61316335229. The reversal of 61316335177 is 77153361316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60366524416 + 949810761 = 245696^2 + 30819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61316335177 is a prime.

It is not a weakly prime, because it can be changed into another prime (61316335117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30658167588 + 30658167589.

It is an arithmetic number, because the mean of its divisors is an integer number (30658167589).

Almost surely, 2^61316335177 is an apocalyptic number.

It is an amenable number.

61316335177 is a deficient number, since it is larger than the sum of its proper divisors (1).

61316335177 is an equidigital number, since it uses as much as digits as its factorization.

61316335177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 43.

The spelling of 61316335177 in words is "sixty-one billion, three hundred sixteen million, three hundred thirty-five thousand, one hundred seventy-seven".