50087782809 has 39 divisors (see below), whose sum is σ = 75377152677. Its totient is φ = 33283086948.

The previous prime is 50087782777. The next prime is 50087782813. The reversal of 50087782809 is 90828778005.

The square root of 50087782809 is 223803.

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

It is not a de Polignac number, because 50087782809 - 2⁵ = 50087782777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50087782819) by changing a digit.

It is a polite number, since it can be written in 38 ways as a sum of consecutive naturals, for example, 163152234 + ... + 163152540.

Almost surely, 2^50087782809 is an apocalyptic number.

50087782809 is the 223803-rd square number.

50087782809 is the 111902-nd centered octagonal number.

It is an amenable number.

50087782809 is a deficient number, since it is larger than the sum of its proper divisors (25289369868).

50087782809 is an frugal number, since it uses more digits than its factorization.

50087782809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 50087782809 in words is "fifty billion, eighty-seven million, seven hundred eighty-two thousand, eight hundred nine".