50111023521 has 16 divisors (see below), whose sum is σ = 72939969536. Its totient is φ = 30415118976.

The previous prime is 50111023513. The next prime is 50111023591. The reversal of 50111023521 is 12532011105.

50111023521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50111023521 - 2³ = 50111023513 is a prime.

It is a super-2 number, since 2×50111023521² (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 (50111023591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8797825 + ... + 8803518.

It is an arithmetic number, because the mean of its divisors is an integer number (4558748096).

Almost surely, 2^50111023521 is an apocalyptic number.

It is an amenable number.

50111023521 is a deficient number, since it is larger than the sum of its proper divisors (22828946015).

50111023521 is a wasteful number, since it uses less digits than its factorization.

50111023521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17601432.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 50111023521 its reverse (12532011105), we get a palindrome (62643034626).

The spelling of 50111023521 in words is "fifty billion, one hundred eleven million, twenty-three thousand, five hundred twenty-one".