50681727637 has 2 divisors, whose sum is σ = 50681727638. Its totient is φ = 50681727636.

The previous prime is 50681727623. The next prime is 50681727667. The reversal of 50681727637 is 73672718605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37486380996 + 13195346641 = 193614^2 + 114871^2 .

It is a cyclic number.

It is not a de Polignac number, because 50681727637 - 2³⁵ = 16321989269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50681727667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25340863818 + 25340863819.

It is an arithmetic number, because the mean of its divisors is an integer number (25340863819).

Almost surely, 2^50681727637 is an apocalyptic number.

It is an amenable number.

50681727637 is a deficient number, since it is larger than the sum of its proper divisors (1).

50681727637 is an equidigital number, since it uses as much as digits as its factorization.

50681727637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 50681727637 in words is "fifty billion, six hundred eighty-one million, seven hundred twenty-seven thousand, six hundred thirty-seven".