255155790564 has 18 divisors (see below), whose sum is σ = 644977137350. Its totient is φ = 85051930176.

The previous prime is 255155790557. The next prime is 255155790569. The reversal of 255155790564 is 465097551552.

255155790564 is a `hidden beast` number, since 2 + 5 + 5 + 1 + 5 + 5 + 79 + 0 + 564 = 666.

255155790564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 175428620964 + 79727169600 = 418842^2 + 282360^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 255155790564.

It is not an unprimeable number, because it can be changed into a prime (255155790569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3543830389 + ... + 3543830460.

Almost surely, 2^255155790564 is an apocalyptic number.

It is an amenable number.

255155790564 is an abundant number, since it is smaller than the sum of its proper divisors (389821346786).

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

255155790564 is a wasteful number, since it uses less digits than its factorization.

255155790564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087660859 (or 7087660854 counting only the distinct ones).

The product of its (nonzero) digits is 9450000, while the sum is 54.

The spelling of 255155790564 in words is "two hundred fifty-five billion, one hundred fifty-five million, seven hundred ninety thousand, five hundred sixty-four".