51544330129 has 2 divisors, whose sum is σ = 51544330130. Its totient is φ = 51544330128.

The previous prime is 51544330127. The next prime is 51544330163. The reversal of 51544330129 is 92103344515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51504033025 + 40297104 = 226945^2 + 6348^2 .

It is a cyclic number.

It is not a de Polignac number, because 51544330129 - 2¹ = 51544330127 is a prime.

Together with 51544330127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51544330127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25772165064 + 25772165065.

It is an arithmetic number, because the mean of its divisors is an integer number (25772165065).

Almost surely, 2^51544330129 is an apocalyptic number.

It is an amenable number.

51544330129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51544330129 is an equidigital number, since it uses as much as digits as its factorization.

51544330129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 51544330129 in words is "fifty-one billion, five hundred forty-four million, three hundred thirty thousand, one hundred twenty-nine".