8128774216 has 16 divisors (see below), whose sum is σ = 15252153840. Its totient is φ = 4061533200.

The previous prime is 8128774207. The next prime is 8128774231. The reversal of 8128774216 is 6124778218.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 344610 + ... + 367441.

It is an arithmetic number, because the mean of its divisors is an integer number (953259615).

Almost surely, 2^8128774216 is an apocalyptic number.

It is an amenable number.

8128774216 is a deficient number, since it is larger than the sum of its proper divisors (7123379624).

8128774216 is a wasteful number, since it uses less digits than its factorization.

8128774216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713484 (or 713480 counting only the distinct ones).

The product of its digits is 301056, while the sum is 46.

The square root of 8128774216 is about 90159.7150394787. The cubic root of 8128774216 is about 2010.6741149538.

The spelling of 8128774216 in words is "eight billion, one hundred twenty-eight million, seven hundred seventy-four thousand, two hundred sixteen".