50420362513 has 2 divisors, whose sum is σ = 50420362514. Its totient is φ = 50420362512.

The previous prime is 50420362511. The next prime is 50420362547. The reversal of 50420362513 is 31526302405.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27585223744 + 22835138769 = 166088^2 + 151113^2 .

It is a cyclic number.

It is not a de Polignac number, because 50420362513 - 2¹ = 50420362511 is a prime.

Together with 50420362511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (50420362511) 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, 25210181256 + 25210181257.

It is an arithmetic number, because the mean of its divisors is an integer number (25210181257).

Almost surely, 2^50420362513 is an apocalyptic number.

It is an amenable number.

50420362513 is a deficient number, since it is larger than the sum of its proper divisors (1).

50420362513 is an equidigital number, since it uses as much as digits as its factorization.

50420362513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 50420362513 its reverse (31526302405), we get a palindrome (81946664918).

The spelling of 50420362513 in words is "fifty billion, four hundred twenty million, three hundred sixty-two thousand, five hundred thirteen".