7081580440 has 64 divisors (see below), whose sum is σ = 18296928000. Its totient is φ = 2439584640.

The previous prime is 7081580413. The next prime is 7081580489. The reversal of 7081580440 is 440851807.

It is a self number, because there is not a number n which added to its sum of digits gives 7081580440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415180 + ... + 431899.

It is an arithmetic number, because the mean of its divisors is an integer number (285889500).

Almost surely, 2^7081580440 is an apocalyptic number.

It is an amenable number.

7081580440 is an abundant number, since it is smaller than the sum of its proper divisors (11215347560).

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

7081580440 is a wasteful number, since it uses less digits than its factorization.

7081580440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847120 (or 847116 counting only the distinct ones).

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

The square root of 7081580440 is about 84152.1267705101. The cubic root of 7081580440 is about 1920.3338214416. Note that the first 3 decimals are identical.

The spelling of 7081580440 in words is "seven billion, eighty-one million, five hundred eighty thousand, four hundred forty".