51322606545989 has 2 divisors, whose sum is σ = 51322606545990. Its totient is φ = 51322606545988.

The previous prime is 51322606545949. The next prime is 51322606546027. The reversal of 51322606545989 is 98954560622315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38255523861025 + 13067082684964 = 6185105^2 + 3614842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51322606545989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51322606545949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25661303272994 + 25661303272995.

It is an arithmetic number, because the mean of its divisors is an integer number (25661303272995).

Almost surely, 2^{51322606545989} is an apocalyptic number.

It is an amenable number.

51322606545989 is a deficient number, since it is larger than the sum of its proper divisors (1).

51322606545989 is an equidigital number, since it uses as much as digits as its factorization.

51322606545989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968000, while the sum is 65.

The spelling of 51322606545989 in words is "fifty-one trillion, three hundred twenty-two billion, six hundred six million, five hundred forty-five thousand, nine hundred eighty-nine".