6581582416 has 20 divisors (see below), whose sum is σ = 12764361600. Its totient is φ = 3287553632.

The previous prime is 6581582377. The next prime is 6581582431. The reversal of 6581582416 is 6142851856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185536 + ... + 218143.

It is an arithmetic number, because the mean of its divisors is an integer number (638218080).

Almost surely, 2^6581582416 is an apocalyptic number.

It is an amenable number.

6581582416 is a deficient number, since it is larger than the sum of its proper divisors (6182779184).

6581582416 is a wasteful number, since it uses less digits than its factorization.

6581582416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404706 (or 404700 counting only the distinct ones).

The product of its digits is 460800, while the sum is 46.

The square root of 6581582416 is about 81126.9524634076. The cubic root of 6581582416 is about 1874.0310172864.

The spelling of 6581582416 in words is "six billion, five hundred eighty-one million, five hundred eighty-two thousand, four hundred sixteen".