505555643304 has 96 divisors (see below), whose sum is σ = 1380595788000. Its totient is φ = 167119355520.

The previous prime is 505555643287. The next prime is 505555643311. The reversal of 505555643304 is 403346555505.

505555643304 is a `hidden beast` number, since 5 + 0 + 5 + 55 + 564 + 3 + 30 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 505555643304.

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, 14592867 + ... + 14627469.

It is an arithmetic number, because the mean of its divisors is an integer number (14381206125).

Almost surely, 2^505555643304 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 505555643304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690297894000).

505555643304 is an abundant number, since it is smaller than the sum of its proper divisors (875040144696).

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

505555643304 is a wasteful number, since it uses less digits than its factorization.

505555643304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36295 (or 36288 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 45.

The spelling of 505555643304 in words is "five hundred five billion, five hundred fifty-five million, six hundred forty-three thousand, three hundred four".