504445913244 has 432 divisors, whose sum is σ = 1695189944448. Its totient is φ = 129939852672.

The previous prime is 504445913243. The next prime is 504445913249. The reversal of 504445913244 is 442319544405.

504445913244 is a `hidden beast` number, since 50 + 4 + 4 + 4 + 591 + 3 + 2 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 504445913244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504445913243) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 26614579 + ... + 26633525.

Almost surely, 2^504445913244 is an apocalyptic number.

504445913244 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 504445913244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847594972224).

504445913244 is an abundant number, since it is smaller than the sum of its proper divisors (1190744031204).

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

504445913244 is a wasteful number, since it uses less digits than its factorization.

504445913244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19036 (or 19015 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 504445913244 in words is "five hundred four billion, four hundred forty-five million, nine hundred thirteen thousand, two hundred forty-four".