6571720000 has 140 divisors (see below), whose sum is σ = 17155383520. Its totient is φ = 2490048000.

The previous prime is 6571719949. The next prime is 6571720003. The reversal of 6571720000 is 271756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6571720003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 755677 + ... + 764323.

Almost surely, 2^6571720000 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 6571720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8577691760).

6571720000 is an abundant number, since it is smaller than the sum of its proper divisors (10583663520).

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

6571720000 is an equidigital number, since it uses as much as digits as its factorization.

6571720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8698 (or 8673 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 6571720000 is about 81066.1458316602. The cubic root of 6571720000 is about 1873.0944789319.

Adding to 6571720000 its reverse (271756), we get a palindrome (6571991756).

The spelling of 6571720000 in words is "six billion, five hundred seventy-one million, seven hundred twenty thousand".