51943731841 has 2 divisors, whose sum is σ = 51943731842. Its totient is φ = 51943731840.

The previous prime is 51943731839. The next prime is 51943731871. The reversal of 51943731841 is 14813734915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35997093441 + 15946638400 = 189729^2 + 126280^2 .

It is a cyclic number.

It is not a de Polignac number, because 51943731841 - 2¹ = 51943731839 is a prime.

Together with 51943731839, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 51943731791 and 51943731800.

It is not a weakly prime, because it can be changed into another prime (51943731871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25971865920 + 25971865921.

It is an arithmetic number, because the mean of its divisors is an integer number (25971865921).

Almost surely, 2^51943731841 is an apocalyptic number.

It is an amenable number.

51943731841 is a deficient number, since it is larger than the sum of its proper divisors (1).

51943731841 is an equidigital number, since it uses as much as digits as its factorization.

51943731841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The spelling of 51943731841 in words is "fifty-one billion, nine hundred forty-three million, seven hundred thirty-one thousand, eight hundred forty-one".