50916568609 has 9 divisors (see below), whose sum is σ = 52033787571. Its totient is φ = 49822857600.

The previous prime is 50916568597. The next prime is 50916568687. The reversal of 50916568609 is 90686561905.

The square root of 50916568609 is 225647.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 29413279009 + 21503289600 = 171503^2 + 146640^2 .

It is not a de Polignac number, because 50916568609 - 2¹⁵ = 50916535841 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 50916568609.

It is not an unprimeable number, because it can be changed into a prime (50916568309) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10603009 + ... + 10607809.

Almost surely, 2^50916568609 is an apocalyptic number.

50916568609 is the 225647-th square number.

50916568609 is the 112824-th centered octagonal number.

It is an amenable number.

50916568609 is a deficient number, since it is larger than the sum of its proper divisors (1117218962).

50916568609 is an frugal number, since it uses more digits than its factorization.

50916568609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9696 (or 4848 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 50916568609 in words is "fifty billion, nine hundred sixteen million, five hundred sixty-eight thousand, six hundred nine".