61336315961 has 2 divisors, whose sum is σ = 61336315962. Its totient is φ = 61336315960.

The previous prime is 61336315949. The next prime is 61336315969. The reversal of 61336315961 is 16951363316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52695498025 + 8640817936 = 229555^2 + 92956^2 .

It is a cyclic number.

It is not a de Polignac number, because 61336315961 - 2¹⁸ = 61336053817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (61336315969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30668157980 + 30668157981.

It is an arithmetic number, because the mean of its divisors is an integer number (30668157981).

Almost surely, 2^61336315961 is an apocalyptic number.

It is an amenable number.

61336315961 is a deficient number, since it is larger than the sum of its proper divisors (1).

61336315961 is an equidigital number, since it uses as much as digits as its factorization.

61336315961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 44.

The spelling of 61336315961 in words is "sixty-one billion, three hundred thirty-six million, three hundred fifteen thousand, nine hundred sixty-one".