6581273712 has 120 divisors (see below), whose sum is σ = 19004640768. Its totient is φ = 1959609600.

The previous prime is 6581273707. The next prime is 6581273719. The reversal of 6581273712 is 2173721856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6581273719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238387 + ... + 264557.

Almost surely, 2^6581273712 is an apocalyptic number.

6581273712 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6581273712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9502320384).

6581273712 is an abundant number, since it is smaller than the sum of its proper divisors (12423367056).

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

6581273712 is a wasteful number, since it uses less digits than its factorization.

6581273712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26239 (or 26220 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 6581273712 is about 81125.0498428198. The cubic root of 6581273712 is about 1874.0017168396.

The spelling of 6581273712 in words is "six billion, five hundred eighty-one million, two hundred seventy-three thousand, seven hundred twelve".