8543537486640 has 1120 divisors, whose sum is σ = 33217422948864. Its totient is φ = 2028438650880.

The previous prime is 8543537486629. The next prime is 8543537486647. The reversal of 8543537486640 is 466847353458.

It is a happy number.

8543537486640 is a `hidden beast` number, since 8 + 5 + 43 + 53 + 7 + 486 + 64 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (8543537486647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 13937254974 + ... + 13937255586.

Almost surely, 2^{8543537486640} is an apocalyptic number.

8543537486640 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 8543537486640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16608711474432).

8543537486640 is an abundant number, since it is smaller than the sum of its proper divisors (24673885462224).

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

8543537486640 is a wasteful number, since it uses less digits than its factorization.

8543537486640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 232243200, while the sum is 63.

The spelling of 8543537486640 in words is "eight trillion, five hundred forty-three billion, five hundred thirty-seven million, four hundred eighty-six thousand, six hundred forty".