2026289281585 has 4 divisors (see below), whose sum is σ = 2431547137908. Its totient is φ = 1621031425264.

The previous prime is 2026289281571. The next prime is 2026289281589. The reversal of 2026289281585 is 5851829826202.

It is a happy number.

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 747650750224 + 1278638531361 = 864668^2 + 1130769^2 .

It is a cyclic number.

It is not a de Polignac number, because 2026289281585 - 2²⁹ = 2025752410673 is a prime.

It is a super-2 number, since 2×2026289281585² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2026289281589) 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 3 ways as a sum of consecutive naturals, for example, 202628928154 + ... + 202628928163.

It is an arithmetic number, because the mean of its divisors is an integer number (607886784477).

Almost surely, 2^{2026289281585} is an apocalyptic number.

It is an amenable number.

2026289281585 is a deficient number, since it is larger than the sum of its proper divisors (405257856323).

2026289281585 is an equidigital number, since it uses as much as digits as its factorization.

2026289281585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405257856322.

The product of its (nonzero) digits is 11059200, while the sum is 58.

The spelling of 2026289281585 in words is "two trillion, twenty-six billion, two hundred eighty-nine million, two hundred eighty-one thousand, five hundred eighty-five".