2580139871 has 4 divisors (see below), whose sum is σ = 2635036512. Its totient is φ = 2525243232.

The previous prime is 2580139867. The next prime is 2580139883. The reversal of 2580139871 is 1789310852.

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

It is a cyclic number.

It is not a de Polignac number, because 2580139871 - 2² = 2580139867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580139271) 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, 27448250 + ... + 27448343.

It is an arithmetic number, because the mean of its divisors is an integer number (658759128).

Almost surely, 2^2580139871 is an apocalyptic number.

2580139871 is a deficient number, since it is larger than the sum of its proper divisors (54896641).

2580139871 is an equidigital number, since it uses as much as digits as its factorization.

2580139871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54896640.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 2580139871 is about 50795.0772319523. The cubic root of 2580139871 is about 1371.5587548754.

The spelling of 2580139871 in words is "two billion, five hundred eighty million, one hundred thirty-nine thousand, eight hundred seventy-one".