505555100004 has 24 divisors (see below), whose sum is σ = 1179640189728. Its totient is φ = 168516706240.

The previous prime is 505555100003. The next prime is 505555100009. The reversal of 505555100004 is 400001555505.

It is not an unprimeable number, because it can be changed into a prime (505555100003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2001784 + ... + 2240144.

It is an arithmetic number, because the mean of its divisors is an integer number (49151674572).

Almost surely, 2^505555100004 is an apocalyptic number.

It is an amenable number.

505555100004 is an abundant number, since it is smaller than the sum of its proper divisors (674085089724).

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

505555100004 is a wasteful number, since it uses less digits than its factorization.

505555100004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415115 (or 415113 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

Adding to 505555100004 its reverse (400001555505), we get a palindrome (905556655509).

The spelling of 505555100004 in words is "five hundred five billion, five hundred fifty-five million, one hundred thousand, four".