255873578161 has 2 divisors, whose sum is σ = 255873578162. Its totient is φ = 255873578160.

The previous prime is 255873578159. The next prime is 255873578171. The reversal of 255873578161 is 161875378552.

255873578161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219919729936 + 35953848225 = 468956^2 + 189615^2 .

It is a cyclic number.

It is not a de Polignac number, because 255873578161 - 2¹ = 255873578159 is a prime.

It is a super-2 number, since 2×255873578161² (a number of 24 digits) contains 22 as substring.

Together with 255873578159, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 255873578096 and 255873578105.

It is not a weakly prime, because it can be changed into another prime (255873578111) 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 as a sum of consecutive naturals, namely, 127936789080 + 127936789081.

It is an arithmetic number, because the mean of its divisors is an integer number (127936789081).

Almost surely, 2^255873578161 is an apocalyptic number.

It is an amenable number.

255873578161 is a deficient number, since it is larger than the sum of its proper divisors (1).

255873578161 is an equidigital number, since it uses as much as digits as its factorization.

255873578161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112000, while the sum is 58.

The spelling of 255873578161 in words is "two hundred fifty-five billion, eight hundred seventy-three million, five hundred seventy-eight thousand, one hundred sixty-one".