8221310751856 has 80 divisors (see below), whose sum is σ = 16640338773568. Its totient is φ = 3930948403200.

The previous prime is 8221310751839. The next prime is 8221310751881. The reversal of 8221310751856 is 6581570131228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46966576 + ... + 47141296.

Almost surely, 2^{8221310751856} is an apocalyptic number.

It is an amenable number.

8221310751856 is an abundant number, since it is smaller than the sum of its proper divisors (8419028021712).

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

8221310751856 is a wasteful number, since it uses less digits than its factorization.

8221310751856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176130 (or 176124 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 8221310751856 in words is "eight trillion, two hundred twenty-one billion, three hundred ten million, seven hundred fifty-one thousand, eight hundred fifty-six".