2580385544 has 64 divisors (see below), whose sum is σ = 5355979200. Its totient is φ = 1155686400.

The previous prime is 2580385543. The next prime is 2580385559. The reversal of 2580385544 is 4455830852.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 2580385495 and 2580385504.

It is not an unprimeable number, because it can be changed into a prime (2580385543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4471784 + ... + 4472360.

It is an arithmetic number, because the mean of its divisors is an integer number (83687175).

Almost surely, 2^2580385544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2580385544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2677989600).

2580385544 is an abundant number, since it is smaller than the sum of its proper divisors (2775593656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2580385544 is a wasteful number, since it uses less digits than its factorization.

2580385544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1250 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 44.

The square root of 2580385544 is about 50797.4954500712. The cubic root of 2580385544 is about 1371.6022853656.

The spelling of 2580385544 in words is "two billion, five hundred eighty million, three hundred eighty-five thousand, five hundred forty-four".