258289861553281 has 4 divisors (see below), whose sum is σ = 258290093902932. Its totient is φ = 258289629203632.

The previous prime is 258289861553279. The next prime is 258289861553323. The reversal of 258289861553281 is 182355168982852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 202038961549681 + 56250900003600 = 14214041^2 + 7500060^2 .

It is a cyclic number.

It is not a de Polignac number, because 258289861553281 - 2¹ = 258289861553279 is a prime.

It is a super-2 number, since 2×258289861553281² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258289861553981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114499306 + ... + 116733331.

It is an arithmetic number, because the mean of its divisors is an integer number (64572523475733).

Almost surely, 2^{258289861553281} is an apocalyptic number.

It is an amenable number.

258289861553281 is a deficient number, since it is larger than the sum of its proper divisors (232349651).

258289861553281 is a wasteful number, since it uses less digits than its factorization.

258289861553281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232349650.

The product of its digits is 663552000, while the sum is 73.

The spelling of 258289861553281 in words is "two hundred fifty-eight trillion, two hundred eighty-nine billion, eight hundred sixty-one million, five hundred fifty-three thousand, two hundred eighty-one".