505200404388 has 12 divisors (see below), whose sum is σ = 1178800943600. Its totient is φ = 168400134792.

The previous prime is 505200404281. The next prime is 505200404389. The reversal of 505200404388 is 883404002505.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (505200404389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21050016838 + ... + 21050016861.

Almost surely, 2^505200404388 is an apocalyptic number.

It is an amenable number.

505200404388 is an abundant number, since it is smaller than the sum of its proper divisors (673600539212).

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

505200404388 is a wasteful number, since it uses less digits than its factorization.

505200404388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42100033706 (or 42100033704 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 39.

The spelling of 505200404388 in words is "five hundred five billion, two hundred million, four hundred four thousand, three hundred eighty-eight".