505110551000 has 256 divisors, whose sum is σ = 1347527301120. Its totient is φ = 175580160000.

The previous prime is 505110550999. The next prime is 505110551039. The reversal of 505110551000 is 155011505.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22219640 + ... + 22242360.

It is an arithmetic number, because the mean of its divisors is an integer number (5263778520).

Almost surely, 2^505110551000 is an apocalyptic number.

505110551000 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 505110551000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673763650560).

505110551000 is an abundant number, since it is smaller than the sum of its proper divisors (842416750120).

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

505110551000 is a wasteful number, since it uses less digits than its factorization.

505110551000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22843 (or 22829 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

Adding to 505110551000 its reverse (155011505), we get a palindrome (505265562505).

The spelling of 505110551000 in words is "five hundred five billion, one hundred ten million, five hundred fifty-one thousand".