505544240508 has 12 divisors (see below), whose sum is σ = 1179603227880. Its totient is φ = 168514746832.

The previous prime is 505544240479. The next prime is 505544240519. The reversal of 505544240508 is 805042445505.

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

It is a super-2 number, since 2×505544240508² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505544240508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21064343343 + ... + 21064343366.

It is an arithmetic number, because the mean of its divisors is an integer number (98300268990).

Almost surely, 2^505544240508 is an apocalyptic number.

It is an amenable number.

505544240508 is an abundant number, since it is smaller than the sum of its proper divisors (674058987372).

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

505544240508 is a wasteful number, since it uses less digits than its factorization.

505544240508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42128686716 (or 42128686714 counting only the distinct ones).

The product of its (nonzero) digits is 640000, while the sum is 42.

The spelling of 505544240508 in words is "five hundred five billion, five hundred forty-four million, two hundred forty thousand, five hundred eight".