505351531050 has 48 divisors (see below), whose sum is σ = 1326993674112. Its totient is φ = 126833324800.

The previous prime is 505351531001. The next prime is 505351531051. The reversal of 505351531050 is 50135153505.

It is a super-2 number, since 2×505351531050² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505351531051) 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 23 ways as a sum of consecutive naturals, for example, 99085986 + ... + 99091085.

It is an arithmetic number, because the mean of its divisors is an integer number (27645701544).

Almost surely, 2^505351531050 is an apocalyptic number.

505351531050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505351531050 is an abundant number, since it is smaller than the sum of its proper divisors (821642143062).

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

505351531050 is a wasteful number, since it uses less digits than its factorization.

505351531050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198177103 (or 198177098 counting only the distinct ones).

The product of its (nonzero) digits is 28125, while the sum is 33.

Adding to 505351531050 its reverse (50135153505), we get a palindrome (555486684555).

The spelling of 505351531050 in words is "five hundred five billion, three hundred fifty-one million, five hundred thirty-one thousand, fifty".