50720171091 has 8 divisors (see below), whose sum is σ = 71186205120. Its totient is φ = 32033792232.

The previous prime is 50720171059. The next prime is 50720171101. The reversal of 50720171091 is 19017102705.

50720171091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50720171091 - 2⁵ = 50720171059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50720171191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444913725 + ... + 444913838.

It is an arithmetic number, because the mean of its divisors is an integer number (8898275640).

Almost surely, 2^50720171091 is an apocalyptic number.

50720171091 is a deficient number, since it is larger than the sum of its proper divisors (20466034029).

50720171091 is a wasteful number, since it uses less digits than its factorization.

50720171091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889827585.

The product of its (nonzero) digits is 4410, while the sum is 33.

Adding to 50720171091 its reverse (19017102705), we get a palindrome (69737273796).

The spelling of 50720171091 in words is "fifty billion, seven hundred twenty million, one hundred seventy-one thousand, ninety-one".