50434321513 has 4 divisors (see below), whose sum is σ = 50437982340. Its totient is φ = 50430660688.

The previous prime is 50434321459. The next prime is 50434321517. The reversal of 50434321513 is 31512343405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31512343405 = 5 ⋅6302468681.

It can be written as a sum of positive squares in 2 ways, for example, as 32059976809 + 18374344704 = 179053^2 + 135552^2 .

It is a cyclic number.

It is not a de Polignac number, because 50434321513 - 2³³ = 41844386921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50434321517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1809670 + ... + 1837327.

It is an arithmetic number, because the mean of its divisors is an integer number (12609495585).

Almost surely, 2^50434321513 is an apocalyptic number.

It is an amenable number.

50434321513 is a deficient number, since it is larger than the sum of its proper divisors (3660827).

50434321513 is a wasteful number, since it uses less digits than its factorization.

50434321513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660826.

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

Adding to 50434321513 its reverse (31512343405), we get a palindrome (81946664918).

The spelling of 50434321513 in words is "fifty billion, four hundred thirty-four million, three hundred twenty-one thousand, five hundred thirteen".