50720171101 has 2 divisors, whose sum is σ = 50720171102. Its totient is φ = 50720171100.

The previous prime is 50720171059. The next prime is 50720171179. The reversal of 50720171101 is 10117102705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29027299876 + 21692871225 = 170374^2 + 147285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50720171101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50720171191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25360085550 + 25360085551.

It is an arithmetic number, because the mean of its divisors is an integer number (25360085551).

Almost surely, 2^50720171101 is an apocalyptic number.

It is an amenable number.

50720171101 is a deficient number, since it is larger than the sum of its proper divisors (1).

50720171101 is an equidigital number, since it uses as much as digits as its factorization.

50720171101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 490, while the sum is 25.

Adding to 50720171101 its reverse (10117102705), we get a palindrome (60837273806).

The spelling of 50720171101 in words is "fifty billion, seven hundred twenty million, one hundred seventy-one thousand, one hundred one".