50390339913 has 6 divisors (see below), whose sum is σ = 72786046554. Its totient is φ = 33593559936.

The previous prime is 50390339911. The next prime is 50390339929. The reversal of 50390339913 is 31993309305.

It can be written as a sum of positive squares in only one way, i.e., 28749576249 + 21640763664 = 169557^2 + 147108^2 .

It is not a de Polignac number, because 50390339913 - 2¹ = 50390339911 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50390339911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2799463320 + ... + 2799463337.

It is an arithmetic number, because the mean of its divisors is an integer number (12131007759).

Almost surely, 2^50390339913 is an apocalyptic number.

It is an amenable number.

50390339913 is a deficient number, since it is larger than the sum of its proper divisors (22395706641).

50390339913 is a wasteful number, since it uses less digits than its factorization.

50390339913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598926663 (or 5598926660 counting only the distinct ones).

The product of its (nonzero) digits is 295245, while the sum is 45.

The spelling of 50390339913 in words is "fifty billion, three hundred ninety million, three hundred thirty-nine thousand, nine hundred thirteen".