505550511100 has 36 divisors (see below), whose sum is σ = 1102728820144. Its totient is φ = 201172423680.

The previous prime is 505550511097. The next prime is 505550511121. The reversal of 505550511100 is 1115055505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13077864 + ... + 13116463.

Almost surely, 2^505550511100 is an apocalyptic number.

505550511100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505550511100 is an abundant number, since it is smaller than the sum of its proper divisors (597178309044).

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

505550511100 is a wasteful number, since it uses less digits than its factorization.

505550511100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26194534 (or 26194527 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 28.

Adding to 505550511100 its reverse (1115055505), we get a palindrome (506665566605).

It can be divided in two parts, 5055505 and 11100, that added together give a palindrome (5066605).

The spelling of 505550511100 in words is "five hundred five billion, five hundred fifty million, five hundred eleven thousand, one hundred".