505050000005 has 4 divisors (see below), whose sum is σ = 606060000012. Its totient is φ = 404040000000.

The previous prime is 505050000001. The next prime is 505050000029. The reversal of 505050000005 is 500000050505.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500000050505 = 5 ⋅100000010101.

It can be written as a sum of positive squares in 2 ways, for example, as 197955586084 + 307094413921 = 444922^2 + 554161^2 .

It is not a de Polignac number, because 505050000005 - 2² = 505050000001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505050000001) 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, 50504999996 + ... + 50505000005.

It is an arithmetic number, because the mean of its divisors is an integer number (151515000003).

Almost surely, 2^505050000005 is an apocalyptic number.

It is an amenable number.

505050000005 is a deficient number, since it is larger than the sum of its proper divisors (101010000007).

505050000005 is a wasteful number, since it uses less digits than its factorization.

505050000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101010000006.

The product of its (nonzero) digits is 625, while the sum is 20.

The spelling of 505050000005 in words is "five hundred five billion, fifty million, five", and thus it is an aban number.