8221368117870 has 96 divisors (see below), whose sum is σ = 21395398257792. Its totient is φ = 2190330671616.

The previous prime is 8221368117857. The next prime is 8221368117901. The reversal of 8221368117870 is 787118631228.

8221368117870 is a `hidden beast` number, since 82 + 21 + 368 + 117 + 8 + 70 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 912770907 + ... + 912779913.

It is an arithmetic number, because the mean of its divisors is an integer number (222868731852).

Almost surely, 2^{8221368117870} is an apocalyptic number.

8221368117870 is an abundant number, since it is smaller than the sum of its proper divisors (13174030139922).

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

8221368117870 is a wasteful number, since it uses less digits than its factorization.

8221368117870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17306 (or 17303 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The spelling of 8221368117870 in words is "eight trillion, two hundred twenty-one billion, three hundred sixty-eight million, one hundred seventeen thousand, eight hundred seventy".