505050005000 has 80 divisors (see below), whose sum is σ = 1187140743360. Its totient is φ = 201369800000.

The previous prime is 505050004997. The next prime is 505050005027. The reversal of 505050005000 is 500050505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1392605 + ... + 1717395.

It is an arithmetic number, because the mean of its divisors is an integer number (14839259292).

Almost surely, 2^505050005000 is an apocalyptic number.

505050005000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505050005000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593570371680).

505050005000 is an abundant number, since it is smaller than the sum of its proper divisors (682090738360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505050005000 is a wasteful number, since it uses less digits than its factorization.

505050005000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325128 (or 325109 counting only the distinct ones).

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

Adding to 505050005000 its reverse (500050505), we get a palindrome (505550055505).

The spelling of 505050005000 in words is "five hundred five billion, fifty million, five thousand".