2580402817 has 4 divisors (see below), whose sum is σ = 2732191236. Its totient is φ = 2428614400.

The previous prime is 2580402757. The next prime is 2580402823. The reversal of 2580402817 is 7182040852.

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 1356522561 + 1223880256 = 36831^2 + 34984^2 .

It is a cyclic number.

It is not a de Polignac number, because 2580402817 - 2⁷ = 2580402689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2580402857) 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, 75894184 + ... + 75894217.

It is an arithmetic number, because the mean of its divisors is an integer number (683047809).

Almost surely, 2^2580402817 is an apocalyptic number.

It is an amenable number.

2580402817 is a deficient number, since it is larger than the sum of its proper divisors (151788419).

2580402817 is a wasteful number, since it uses less digits than its factorization.

2580402817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151788418.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 2580402817 is about 50797.6654680114. The cubic root of 2580402817 is about 1371.6053458428.

The spelling of 2580402817 in words is "two billion, five hundred eighty million, four hundred two thousand, eight hundred seventeen".