50216555161 has 4 divisors (see below), whose sum is σ = 50217887524. Its totient is φ = 50215222800.

The previous prime is 50216555099. The next prime is 50216555177. The reversal of 50216555161 is 16155561205.

50216555161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40721222025 + 9495333136 = 201795^2 + 97444^2 .

It is a cyclic number.

It is not a de Polignac number, because 50216555161 - 2¹³ = 50216546969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50216555161.

It is not an unprimeable number, because it can be changed into a prime (50216555261) 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, 607950 + ... + 685591.

It is an arithmetic number, because the mean of its divisors is an integer number (12554471881).

Almost surely, 2^50216555161 is an apocalyptic number.

It is an amenable number.

50216555161 is a deficient number, since it is larger than the sum of its proper divisors (1332363).

50216555161 is a wasteful number, since it uses less digits than its factorization.

50216555161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332362.

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 50216555161 in words is "fifty billion, two hundred sixteen million, five hundred fifty-five thousand, one hundred sixty-one".