255795065568 has 144 divisors (see below), whose sum is σ = 858151397376. Its totient is φ = 70726728960.

The previous prime is 255795065563. The next prime is 255795065569. The reversal of 255795065568 is 865560597552.

255795065568 is a `hidden beast` number, since 2 + 5 + 5 + 7 + 9 + 5 + 0 + 65 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×255795065568² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255795065563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1983996 + ... + 2108987.

It is an arithmetic number, because the mean of its divisors is an integer number (5959384704).

Almost surely, 2^255795065568 is an apocalyptic number.

255795065568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

255795065568 is an abundant number, since it is smaller than the sum of its proper divisors (602356331808).

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

255795065568 is a wasteful number, since it uses less digits than its factorization.

255795065568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093037 (or 4093026 counting only the distinct ones).

The product of its (nonzero) digits is 113400000, while the sum is 63.

The spelling of 255795065568 in words is "two hundred fifty-five billion, seven hundred ninety-five million, sixty-five thousand, five hundred sixty-eight".