50478289993 has 2 divisors, whose sum is σ = 50478289994. Its totient is φ = 50478289992.

The previous prime is 50478289969. The next prime is 50478289999. The reversal of 50478289993 is 39998287405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48712021264 + 1766268729 = 220708^2 + 42027^2 .

It is a cyclic number.

It is not a de Polignac number, because 50478289993 - 2⁹ = 50478289481 is a prime.

It is not a weakly prime, because it can be changed into another prime (50478289999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25239144996 + 25239144997.

It is an arithmetic number, because the mean of its divisors is an integer number (25239144997).

Almost surely, 2^50478289993 is an apocalyptic number.

It is an amenable number.

50478289993 is a deficient number, since it is larger than the sum of its proper divisors (1).

50478289993 is an equidigital number, since it uses as much as digits as its factorization.

50478289993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 50478289993 in words is "fifty billion, four hundred seventy-eight million, two hundred eighty-nine thousand, nine hundred ninety-three".