8221338675520 has 28 divisors (see below), whose sum is σ = 19577062721844. Its totient is φ = 3288535470080.

The previous prime is 8221338675499. The next prime is 8221338675553. The reversal of 8221338675520 is 255768331228.

It can be written as a sum of positive squares in 2 ways, for example, as 1857747192064 + 6363591483456 = 1362992^2 + 2522616^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12845841361 + ... + 12845842000.

Almost surely, 2^{8221338675520} is an apocalyptic number.

8221338675520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8221338675520 is an abundant number, since it is smaller than the sum of its proper divisors (11355724046324).

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

8221338675520 is a wasteful number, since it uses less digits than its factorization.

8221338675520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25691683378 (or 25691683368 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 8221338675520 in words is "eight trillion, two hundred twenty-one billion, three hundred thirty-eight million, six hundred seventy-five thousand, five hundred twenty".