51671841737 has 2 divisors, whose sum is σ = 51671841738. Its totient is φ = 51671841736.

The previous prime is 51671841671. The next prime is 51671841757. The reversal of 51671841737 is 73714817615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50396209081 + 1275632656 = 224491^2 + 35716^2 .

It is a cyclic number.

It is not a de Polignac number, because 51671841737 - 2¹² = 51671837641 is a prime.

It is not a weakly prime, because it can be changed into another prime (51671841757) 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, 25835920868 + 25835920869.

It is an arithmetic number, because the mean of its divisors is an integer number (25835920869).

Almost surely, 2^51671841737 is an apocalyptic number.

It is an amenable number.

51671841737 is a deficient number, since it is larger than the sum of its proper divisors (1).

51671841737 is an equidigital number, since it uses as much as digits as its factorization.

51671841737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987840, while the sum is 50.

The spelling of 51671841737 in words is "fifty-one billion, six hundred seventy-one million, eight hundred forty-one thousand, seven hundred thirty-seven".