61423316137 has 2 divisors, whose sum is σ = 61423316138. Its totient is φ = 61423316136.

The previous prime is 61423316117. The next prime is 61423316153. The reversal of 61423316137 is 73161332416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46309318416 + 15113997721 = 215196^2 + 122939^2 .

It is a cyclic number.

It is not a de Polignac number, because 61423316137 - 2¹¹ = 61423314089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61423316096 and 61423316105.

It is not a weakly prime, because it can be changed into another prime (61423316117) 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, 30711658068 + 30711658069.

It is an arithmetic number, because the mean of its divisors is an integer number (30711658069).

Almost surely, 2^61423316137 is an apocalyptic number.

It is an amenable number.

61423316137 is a deficient number, since it is larger than the sum of its proper divisors (1).

61423316137 is an equidigital number, since it uses as much as digits as its factorization.

61423316137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The spelling of 61423316137 in words is "sixty-one billion, four hundred twenty-three million, three hundred sixteen thousand, one hundred thirty-seven".