8373521005217 has 16 divisors (see below), whose sum is σ = 8588657725440. Its totient is φ = 8161178799312.

The previous prime is 8373521005181. The next prime is 8373521005231. The reversal of 8373521005217 is 7125001253738.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8373521005217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8373521005517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7209584 + ... + 8290062.

It is an arithmetic number, because the mean of its divisors is an integer number (536791107840).

Almost surely, 2^{8373521005217} is an apocalyptic number.

It is an amenable number.

8373521005217 is a deficient number, since it is larger than the sum of its proper divisors (215136720223).

8373521005217 is a wasteful number, since it uses less digits than its factorization.

8373521005217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081772.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 8373521005217 in words is "eight trillion, three hundred seventy-three billion, five hundred twenty-one million, five thousand, two hundred seventeen".