255109542444 has 72 divisors (see below), whose sum is σ = 669199269648. Its totient is φ = 84978616320.

The previous prime is 255109542439. The next prime is 255109542469. The reversal of 255109542444 is 444245901552.

255109542444 is a `hidden beast` number, since 2 + 5 + 510 + 95 + 4 + 2 + 4 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 255109542444.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1350924 + ... + 1528140.

Almost surely, 2^255109542444 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 255109542444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334599634824).

255109542444 is an abundant number, since it is smaller than the sum of its proper divisors (414089727204).

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

255109542444 is a wasteful number, since it uses less digits than its factorization.

255109542444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178717 (or 178703 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 255109542444 in words is "two hundred fifty-five billion, one hundred nine million, five hundred forty-two thousand, four hundred forty-four".