255665761344 is a `hidden beast` number, since 2 + 5 + 5 + 66 + 576 + 1 + 3 + 4 + 4 = 666.
It is an unprimeable number.
Almost surely, 2255665761344 is an apocalyptic number.
255665761344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 255665761344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490721172480).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
255665761344 is a wasteful number, since it uses less digits than its factorization.
255665761344 is an evil number, because the sum of its binary digits is even.
The spelling of 255665761344 in words is "two hundred fifty-five billion, six hundred sixty-five million, seven hundred sixty-one thousand, three hundred forty-four".