8221067256368 has 10 divisors (see below), whose sum is σ = 15928317809244. Its totient is φ = 4110533628176.

The previous prime is 8221067256343. The next prime is 8221067256433. The reversal of 8221067256368 is 8636527601228.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256908351746 + ... + 256908351777.

Almost surely, 2^{8221067256368} is an apocalyptic number.

It is an amenable number.

8221067256368 is a deficient number, since it is larger than the sum of its proper divisors (7707250552876).

8221067256368 is a wasteful number, since it uses less digits than its factorization.

8221067256368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513816703531 (or 513816703525 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 8221067256368 in words is "eight trillion, two hundred twenty-one billion, sixty-seven million, two hundred fifty-six thousand, three hundred sixty-eight".