2580717621 has 8 divisors (see below), whose sum is σ = 3445110880. Its totient is φ = 1718401392.

The previous prime is 2580717619. The next prime is 2580717637. The reversal of 2580717621 is 1267170852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2580717621 - 2¹ = 2580717619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2580717621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580717611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516355 + ... + 521328.

It is an arithmetic number, because the mean of its divisors is an integer number (430638860).

Almost surely, 2^2580717621 is an apocalyptic number.

It is an amenable number.

2580717621 is a deficient number, since it is larger than the sum of its proper divisors (864393259).

2580717621 is a wasteful number, since it uses less digits than its factorization.

2580717621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038515.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 2580717621 is about 50800.7639804757. The cubic root of 2580717621 is about 1371.6611212807.

The spelling of 2580717621 in words is "two billion, five hundred eighty million, seven hundred seventeen thousand, six hundred twenty-one".