505533422100 has 72 divisors (see below), whose sum is σ = 1671630522688. Its totient is φ = 115550496000.

The previous prime is 505533422087. The next prime is 505533422137. The reversal of 505533422100 is 1224335505.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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, 120363001 + ... + 120367200.

Almost surely, 2^505533422100 is an apocalyptic number.

505533422100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505533422100 is an abundant number, since it is smaller than the sum of its proper divisors (1166097100588).

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

505533422100 is a wasteful number, since it uses less digits than its factorization.

505533422100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240730225 (or 240730218 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 505533422100 its reverse (1224335505), we get a palindrome (506757757605).

The spelling of 505533422100 in words is "five hundred five billion, five hundred thirty-three million, four hundred twenty-two thousand, one hundred".