50015550161 has 2 divisors, whose sum is σ = 50015550162. Its totient is φ = 50015550160.

The previous prime is 50015550149. The next prime is 50015550173. The reversal of 50015550161 is 16105551005.

It is a happy number.

50015550161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (50015550149) and next prime (50015550173).

It can be written as a sum of positive squares in only one way, i.e., 49789228225 + 226321936 = 223135^2 + 15044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50015550161 is a prime.

It is not a weakly prime, because it can be changed into another prime (50015550191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25007775080 + 25007775081.

It is an arithmetic number, because the mean of its divisors is an integer number (25007775081).

Almost surely, 2^50015550161 is an apocalyptic number.

It is an amenable number.

50015550161 is a deficient number, since it is larger than the sum of its proper divisors (1).

50015550161 is an equidigital number, since it uses as much as digits as its factorization.

50015550161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 50015550161 in words is "fifty billion, fifteen million, five hundred fifty thousand, one hundred sixty-one".