2581720271852 has 24 divisors (see below), whose sum is σ = 4909213424640. Its totient is φ = 1183471091280.

The previous prime is 2581720271791. The next prime is 2581720271873.

2581720271852 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2581720271852.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 547900928 + ... + 547905639.

It is an arithmetic number, because the mean of its divisors is an integer number (204550559360).

Almost surely, 2^{2581720271852} is an apocalyptic number.

It is an amenable number.

2581720271852 is a deficient number, since it is larger than the sum of its proper divisors (2327493152788).

2581720271852 is a wasteful number, since it uses less digits than its factorization.

2581720271852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095806621 (or 1095806619 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 50.

The spelling of 2581720271852 in words is "two trillion, five hundred eighty-one billion, seven hundred twenty million, two hundred seventy-one thousand, eight hundred fifty-two".