505200404100 has 72 divisors (see below), whose sum is σ = 1670529343168. Its totient is φ = 115474377600.

The previous prime is 505200404083. The next prime is 505200404119. The reversal of 505200404100 is 1404002505.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120283711 + ... + 120287910.

Almost surely, 2^505200404100 is an apocalyptic number.

505200404100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505200404100 is an abundant number, since it is smaller than the sum of its proper divisors (1165328939068).

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

505200404100 is a wasteful number, since it uses less digits than its factorization.

505200404100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240571645 (or 240571638 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 505200404100 its reverse (1404002505), we get a palindrome (506604406605).

The spelling of 505200404100 in words is "five hundred five billion, two hundred million, four hundred four thousand, one hundred".