50005511509 has 32 divisors (see below), whose sum is σ = 54471605760. Its totient is φ = 45732556800.

The previous prime is 50005511471. The next prime is 50005511531. The reversal of 50005511509 is 90511550005.

It is not a de Polignac number, because 50005511509 - 2¹⁵ = 50005478741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50005511579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29960527 + ... + 29962195.

It is an arithmetic number, because the mean of its divisors is an integer number (1702237680).

Almost surely, 2^50005511509 is an apocalyptic number.

It is an amenable number.

50005511509 is a deficient number, since it is larger than the sum of its proper divisors (4466094251).

50005511509 is a wasteful number, since it uses less digits than its factorization.

50005511509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101.

The product of its (nonzero) digits is 5625, while the sum is 31.

The spelling of 50005511509 in words is "fifty billion, five million, five hundred eleven thousand, five hundred nine".