2564285507873 has 4 divisors (see below), whose sum is σ = 2564464579908. Its totient is φ = 2564106435840.

The previous prime is 2564285507867. The next prime is 2564285507879. The reversal of 2564285507873 is 3787055824652.

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

It is an interprime number because it is at equal distance from previous prime (2564285507867) and next prime (2564285507879).

It can be written as a sum of positive squares in 2 ways, for example, as 657489074449 + 1906796433424 = 810857^2 + 1380868^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564285507873 - 2³⁴ = 2547105638689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2564285507879) 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, 89514536 + ... + 89543177.

It is an arithmetic number, because the mean of its divisors is an integer number (641116144977).

Almost surely, 2^{2564285507873} is an apocalyptic number.

It is an amenable number.

2564285507873 is a deficient number, since it is larger than the sum of its proper divisors (179072035).

2564285507873 is a wasteful number, since it uses less digits than its factorization.

2564285507873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179072034.

The product of its (nonzero) digits is 112896000, while the sum is 62.

The spelling of 2564285507873 in words is "two trillion, five hundred sixty-four billion, two hundred eighty-five million, five hundred seven thousand, eight hundred seventy-three".