505005550504 has 128 divisors (see below), whose sum is σ = 1193508771840. Its totient is φ = 194971214592.

The previous prime is 505005550459. The next prime is 505005550583. The reversal of 505005550504 is 405055500505.

It is a self number, because there is not a number n which added to its sum of digits gives 505005550504.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40908157 + ... + 40920499.

It is an arithmetic number, because the mean of its divisors is an integer number (9324287280).

Almost surely, 2^505005550504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505005550504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596754385920).

505005550504 is an abundant number, since it is smaller than the sum of its proper divisors (688503221336).

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

505005550504 is a wasteful number, since it uses less digits than its factorization.

505005550504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13719 (or 13715 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 34.

The spelling of 505005550504 in words is "five hundred five billion, five million, five hundred fifty thousand, five hundred four".