255044201240440 has 32 divisors (see below), whose sum is σ = 573855473990160. Its totient is φ = 102016610060800.

The previous prime is 255044201240431. The next prime is 255044201240497. The reversal of 255044201240440 is 44042102440552.

It is a self number, because there is not a number n which added to its sum of digits gives 255044201240440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29585746 + ... + 37221025.

Almost surely, 2^{255044201240440} is an apocalyptic number.

255044201240440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255044201240440 is an abundant number, since it is smaller than the sum of its proper divisors (318811272749720).

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

255044201240440 is a wasteful number, since it uses less digits than its factorization.

255044201240440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66902223 (or 66902219 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 255044201240440 its reverse (44042102440552), we get a palindrome (299086303680992).

The spelling of 255044201240440 in words is "two hundred fifty-five trillion, forty-four billion, two hundred one million, two hundred forty thousand, four hundred forty".