50168013881 has 4 divisors (see below), whose sum is σ = 50169907200. Its totient is φ = 50166120564.

The previous prime is 50168013827. The next prime is 50168013911. The reversal of 50168013881 is 18831086105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50168013881 - 2¹⁸ = 50167751737 is a prime.

It is a super-2 number, since 2×50168013881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50168013811) 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, 906341 + ... + 960098.

It is an arithmetic number, because the mean of its divisors is an integer number (12542476800).

Almost surely, 2^50168013881 is an apocalyptic number.

It is an amenable number.

50168013881 is a deficient number, since it is larger than the sum of its proper divisors (1893319).

50168013881 is a wasteful number, since it uses less digits than its factorization.

50168013881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893318.

The product of its (nonzero) digits is 46080, while the sum is 41.

Adding to 50168013881 its reverse (18831086105), we get a palindrome (68999099986).

The spelling of 50168013881 in words is "fifty billion, one hundred sixty-eight million, thirteen thousand, eight hundred eighty-one".