50688845561 has 4 divisors (see below), whose sum is σ = 50771535972. Its totient is φ = 50606155152.

The previous prime is 50688845551. The next prime is 50688845567. The reversal of 50688845561 is 16554888605.

It is a happy number.

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 20126813161 + 30562032400 = 141869^2 + 174820^2 .

It is a cyclic number.

It is not a de Polignac number, because 50688845561 - 2²² = 50684651257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50688845497 and 50688845506.

It is not an unprimeable number, because it can be changed into a prime (50688845567) 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, 41344286 + ... + 41345511.

It is an arithmetic number, because the mean of its divisors is an integer number (12692883993).

Almost surely, 2^50688845561 is an apocalyptic number.

It is an amenable number.

50688845561 is a deficient number, since it is larger than the sum of its proper divisors (82690411).

50688845561 is an equidigital number, since it uses as much as digits as its factorization.

50688845561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82690410.

The product of its (nonzero) digits is 9216000, while the sum is 56.

The spelling of 50688845561 in words is "fifty billion, six hundred eighty-eight million, eight hundred forty-five thousand, five hundred sixty-one".