505352321540 has 96 divisors (see below), whose sum is σ = 1164369185280. Its totient is φ = 182710886400.

The previous prime is 505352321527. The next prime is 505352321563. The reversal of 505352321540 is 45123253505.

It is a self number, because there is not a number n which added to its sum of digits gives 505352321540.

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, 35379200 + ... + 35393480.

It is an arithmetic number, because the mean of its divisors is an integer number (12128845680).

Almost surely, 2^505352321540 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 505352321540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582184592640).

505352321540 is an abundant number, since it is smaller than the sum of its proper divisors (659016863740).

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

505352321540 is a wasteful number, since it uses less digits than its factorization.

505352321540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15213 (or 15211 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 505352321540 in words is "five hundred five billion, three hundred fifty-two million, three hundred twenty-one thousand, five hundred forty".