8466159197520 has 400 divisors, whose sum is σ = 31141379533968. Its totient is φ = 2124328550400.

The previous prime is 8466159197497. The next prime is 8466159197521. The reversal of 8466159197520 is 257919516648.

8466159197520 is a `hidden beast` number, since 8 + 4 + 6 + 6 + 15 + 9 + 1 + 97 + 520 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 493916595264 + 7972242602256 = 702792^2 + 2823516^2 .

It is a super-3 number, since 3×8466159197520³ (a number of 40 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8466159197521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 694112062 + ... + 694124258.

Almost surely, 2^{8466159197520} is an apocalyptic number.

8466159197520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8466159197520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15570689766984).

8466159197520 is an abundant number, since it is smaller than the sum of its proper divisors (22675220336448).

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

8466159197520 is a wasteful number, since it uses less digits than its factorization.

8466159197520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18540 (or 18525 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 63.

The spelling of 8466159197520 in words is "eight trillion, four hundred sixty-six billion, one hundred fifty-nine million, one hundred ninety-seven thousand, five hundred twenty".