8122016872 has 8 divisors (see below), whose sum is σ = 15228781650. Its totient is φ = 4061008432.

The previous prime is 8122016827. The next prime is 8122016873. The reversal of 8122016872 is 2786102218.

It can be written as a sum of positive squares in only one way, i.e., 4550042116 + 3571974756 = 67454^2 + 59766^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (8122016873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507626047 + ... + 507626062.

Almost surely, 2^8122016872 is an apocalyptic number.

It is an amenable number.

8122016872 is a deficient number, since it is larger than the sum of its proper divisors (7106764778).

8122016872 is a wasteful number, since it uses less digits than its factorization.

8122016872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015252115 (or 1015252111 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 8122016872 is about 90122.2329505877. The cubic root of 8122016872 is about 2010.1168114419.

The spelling of 8122016872 in words is "eight billion, one hundred twenty-two million, sixteen thousand, eight hundred seventy-two".