8209992557232 has 320 divisors, whose sum is σ = 24408687744000. Its totient is φ = 2640118966272.

The previous prime is 8209992557213. The next prime is 8209992557267. The reversal of 8209992557232 is 2327552999028.

8209992557232 is a `hidden beast` number, since 8 + 2 + 0 + 9 + 9 + 9 + 25 + 572 + 32 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8209992557232.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1027143828 + ... + 1027151820.

It is an arithmetic number, because the mean of its divisors is an integer number (76277149200).

Almost surely, 2^{8209992557232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8209992557232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12204343872000).

8209992557232 is an abundant number, since it is smaller than the sum of its proper divisors (16198695186768).

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

8209992557232 is a wasteful number, since it uses less digits than its factorization.

8209992557232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8585 (or 8573 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 8209992557232 in words is "eight trillion, two hundred nine billion, nine hundred ninety-two million, five hundred fifty-seven thousand, two hundred thirty-two".