8172722711 has 4 divisors (see below), whose sum is σ = 8182237800. Its totient is φ = 8163207624.

The previous prime is 8172722683. The next prime is 8172722743. The reversal of 8172722711 is 1172272718.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8172722711 - 2¹⁸ = 8172460567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8172722771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4756256 + ... + 4757973.

It is an arithmetic number, because the mean of its divisors is an integer number (2045559450).

Almost surely, 2^8172722711 is an apocalyptic number.

8172722711 is a deficient number, since it is larger than the sum of its proper divisors (9515089).

8172722711 is an equidigital number, since it uses as much as digits as its factorization.

8172722711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9515088.

The product of its digits is 21952, while the sum is 38.

The square root of 8172722711 is about 90403.1122860270. The cubic root of 8172722711 is about 2014.2911968620.

The spelling of 8172722711 in words is "eight billion, one hundred seventy-two million, seven hundred twenty-two thousand, seven hundred eleven".