8543666663457 has 8 divisors (see below), whose sum is σ = 11578302363840. Its totient is φ = 5602404369360.

The previous prime is 8543666663449. The next prime is 8543666663551. The reversal of 8543666663457 is 7543666663458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8543666663457 - 2³ = 8543666663449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8543666663391 and 8543666663400.

It is not an unprimeable number, because it can be changed into a prime (8543666663407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23343351357 + ... + 23343351722.

It is an arithmetic number, because the mean of its divisors is an integer number (1447287795480).

Almost surely, 2^{8543666663457} is an apocalyptic number.

It is an amenable number.

8543666663457 is a deficient number, since it is larger than the sum of its proper divisors (3034635700383).

8543666663457 is a wasteful number, since it uses less digits than its factorization.

8543666663457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46686703143.

The product of its digits is 1567641600, while the sum is 69.

Subtracting from 8543666663457 its reverse (7543666663458), we obtain a palindrome (999999999999).

The spelling of 8543666663457 in words is "eight trillion, five hundred forty-three billion, six hundred sixty-six million, six hundred sixty-three thousand, four hundred fifty-seven".