505440044256 has 72 divisors (see below), whose sum is σ = 1543397292360. Its totient is φ = 144411439872.

The previous prime is 505440044209. The next prime is 505440044297. The reversal of 505440044256 is 652440044505.

It is a super-4 number, since 4×505440044256⁴ (a number of 48 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53719791 + ... + 53729198.

It is an arithmetic number, because the mean of its divisors is an integer number (21436073505).

Almost surely, 2^505440044256 is an apocalyptic number.

505440044256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

505440044256 is an abundant number, since it is smaller than the sum of its proper divisors (1037957248104).

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

505440044256 is a wasteful number, since it uses less digits than its factorization.

505440044256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107449016 (or 107449001 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

The spelling of 505440044256 in words is "five hundred five billion, four hundred forty million, forty-four thousand, two hundred fifty-six".