50503665413 has 4 divisors (see below), whose sum is σ = 50531709228. Its totient is φ = 50475621600.

The previous prime is 50503665403. The next prime is 50503665427. The reversal of 50503665413 is 31456630505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31456630505 = 5 ⋅6291326101.

It can be written as a sum of positive squares in 2 ways, for example, as 11968797604 + 38534867809 = 109402^2 + 196303^2 .

It is a cyclic number.

It is not a de Polignac number, because 50503665413 - 2¹² = 50503661317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50503665403) 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, 14019206 + ... + 14022807.

It is an arithmetic number, because the mean of its divisors is an integer number (12632927307).

Almost surely, 2^50503665413 is an apocalyptic number.

It is an amenable number.

50503665413 is a deficient number, since it is larger than the sum of its proper divisors (28043815).

50503665413 is a wasteful number, since it uses less digits than its factorization.

50503665413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28043814.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 50503665413 in words is "fifty billion, five hundred three million, six hundred sixty-five thousand, four hundred thirteen".