50661045136 has 20 divisors (see below), whose sum is σ = 105706219612. Its totient is φ = 23382020736.

The previous prime is 50661045133. The next prime is 50661045167. The reversal of 50661045136 is 63154016605.

It can be written as a sum of positive squares in 2 ways, for example, as 32234611600 + 18426433536 = 179540^2 + 135744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 50661045095 and 50661045104.

It is not an unprimeable number, because it can be changed into a prime (50661045133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121781151 + ... + 121781566.

Almost surely, 2^50661045136 is an apocalyptic number.

It is an amenable number.

50661045136 is an abundant number, since it is smaller than the sum of its proper divisors (55045174476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50661045136 is a wasteful number, since it uses less digits than its factorization.

50661045136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243562738 (or 243562732 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 50661045136 in words is "fifty billion, six hundred sixty-one million, forty-five thousand, one hundred thirty-six".