8172722712 has 256 divisors, whose sum is σ = 26085888000. Its totient is φ = 2072378880.

The previous prime is 8172722683. The next prime is 8172722743. The reversal of 8172722712 is 2172272718.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (43904) is a multiple of the sum of its prime factors (686).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18448363 + ... + 18448805.

It is an arithmetic number, because the mean of its divisors is an integer number (101898000).

Almost surely, 2^8172722712 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 8172722712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13042944000).

8172722712 is an abundant number, since it is smaller than the sum of its proper divisors (17913165288).

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

8172722712 is a wasteful number, since it uses less digits than its factorization.

8172722712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 682 counting only the distinct ones).

The product of its digits is 43904, while the sum is 39.

The square root of 8172722712 is about 90403.1122915578. The cubic root of 8172722712 is about 2014.2911969441.

The spelling of 8172722712 in words is "eight billion, one hundred seventy-two million, seven hundred twenty-two thousand, seven hundred twelve".