50481559813 has 2 divisors, whose sum is σ = 50481559814. Its totient is φ = 50481559812.

The previous prime is 50481559811. The next prime is 50481559829. The reversal of 50481559813 is 31895518405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48837906049 + 1643653764 = 220993^2 + 40542^2 .

It is a cyclic number.

It is not a de Polignac number, because 50481559813 - 2¹ = 50481559811 is a prime.

It is a super-4 number, since 4×50481559813⁴ (a number of 44 digits) contains 4444 as substring.

Together with 50481559811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50481559811) 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, 25240779906 + 25240779907.

It is an arithmetic number, because the mean of its divisors is an integer number (25240779907).

Almost surely, 2^50481559813 is an apocalyptic number.

It is an amenable number.

50481559813 is a deficient number, since it is larger than the sum of its proper divisors (1).

50481559813 is an equidigital number, since it uses as much as digits as its factorization.

50481559813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 50481559813 in words is "fifty billion, four hundred eighty-one million, five hundred fifty-nine thousand, eight hundred thirteen".