50112009509 has 4 divisors (see below), whose sum is σ = 50114553516. Its totient is φ = 50109465504.

The previous prime is 50112009503. The next prime is 50112009517. The reversal of 50112009509 is 90590021105.

50112009509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90590021105 = 5 ⋅18118004221.

It can be written as a sum of positive squares in 2 ways, for example, as 3013461025 + 47098548484 = 54895^2 + 217022^2 .

It is a cyclic number.

It is not a de Polignac number, because 50112009509 - 2²⁴ = 50095232293 is a prime.

It is a super-2 number, since 2×50112009509² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50112009503) 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, 1242224 + ... + 1281929.

It is an arithmetic number, because the mean of its divisors is an integer number (12528638379).

Almost surely, 2^50112009509 is an apocalyptic number.

It is an amenable number.

50112009509 is a deficient number, since it is larger than the sum of its proper divisors (2544007).

50112009509 is a wasteful number, since it uses less digits than its factorization.

50112009509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544006.

The product of its (nonzero) digits is 4050, while the sum is 32.

The spelling of 50112009509 in words is "fifty billion, one hundred twelve million, nine thousand, five hundred nine".