50040021011 has 4 divisors (see below), whose sum is σ = 50044685352. Its totient is φ = 50035356672.

The previous prime is 50040021007. The next prime is 50040021019. The reversal of 50040021011 is 11012004005.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50040021011 - 2² = 50040021007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50040021019) 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, 2316041 + ... + 2337546.

It is an arithmetic number, because the mean of its divisors is an integer number (12511171338).

Almost surely, 2^50040021011 is an apocalyptic number.

50040021011 is a deficient number, since it is larger than the sum of its proper divisors (4664341).

50040021011 is a wasteful number, since it uses less digits than its factorization.

50040021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664340.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 50040021011 its reverse (11012004005), we get a palindrome (61052025016).

The spelling of 50040021011 in words is "fifty billion, forty million, twenty-one thousand, eleven".