6581786160 has 40 divisors (see below), whose sum is σ = 20403537840. Its totient is φ = 1755142912.

The previous prime is 6581786137. The next prime is 6581786161. The reversal of 6581786160 is 616871856.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (6581786161) 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, 13711815 + ... + 13712294.

It is an arithmetic number, because the mean of its divisors is an integer number (510088446).

Almost surely, 2^6581786160 is an apocalyptic number.

6581786160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6581786160 is an abundant number, since it is smaller than the sum of its proper divisors (13821751680).

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

6581786160 is a wasteful number, since it uses less digits than its factorization.

6581786160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27424125 (or 27424119 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 6581786160 is about 81128.2081646082. The cubic root of 6581786160 is about 1874.0503550187.

The spelling of 6581786160 in words is "six billion, five hundred eighty-one million, seven hundred eighty-six thousand, one hundred sixty".