504912823668 has 144 divisors (see below), whose sum is σ = 1412286744960. Its totient is φ = 150824736000.

The previous prime is 504912823651. The next prime is 504912823673. The reversal of 504912823668 is 866328219405.

504912823668 is a `hidden beast` number, since 50 + 491 + 28 + 23 + 6 + 68 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9131521 + ... + 9186647.

It is an arithmetic number, because the mean of its divisors is an integer number (9807546840).

Almost surely, 2^504912823668 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 504912823668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706143372480).

504912823668 is an abundant number, since it is smaller than the sum of its proper divisors (907373921292).

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

504912823668 is a wasteful number, since it uses less digits than its factorization.

504912823668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55478 (or 55473 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 504912823668 in words is "five hundred four billion, nine hundred twelve million, eight hundred twenty-three thousand, six hundred sixty-eight".