51044341921 has 2 divisors, whose sum is σ = 51044341922. Its totient is φ = 51044341920.

The previous prime is 51044341889. The next prime is 51044341927. The reversal of 51044341921 is 12914344015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35328961600 + 15715380321 = 187960^2 + 125361^2 .

It is a cyclic number.

It is not a de Polignac number, because 51044341921 - 2⁵ = 51044341889 is a prime.

It is not a weakly prime, because it can be changed into another prime (51044341927) 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, 25522170960 + 25522170961.

It is an arithmetic number, because the mean of its divisors is an integer number (25522170961).

Almost surely, 2^51044341921 is an apocalyptic number.

It is an amenable number.

51044341921 is a deficient number, since it is larger than the sum of its proper divisors (1).

51044341921 is an equidigital number, since it uses as much as digits as its factorization.

51044341921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 51044341921 its reverse (12914344015), we get a palindrome (63958685936).

The spelling of 51044341921 in words is "fifty-one billion, forty-four million, three hundred forty-one thousand, nine hundred twenty-one".