9646540268543 has 8 divisors (see below), whose sum is σ = 9737033421312. Its totient is φ = 9556053385816.

The previous prime is 9646540268537. The next prime is 9646540268551. The reversal of 9646540268543 is 3458620456469.

9646540268543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 3105888²-1.

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

It is a cyclic number.

It is not a de Polignac number, because 9646540268543 - 2¹² = 9646540264447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9646540268513) 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, 1552946 + ... + 4658832.

It is an arithmetic number, because the mean of its divisors is an integer number (1217129177664).

Almost surely, 2^{9646540268543} is an apocalyptic number.

9646540268543 is a deficient number, since it is larger than the sum of its proper divisors (90493152769).

9646540268543 is a wasteful number, since it uses less digits than its factorization.

9646540268543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135021.

The product of its (nonzero) digits is 149299200, while the sum is 62.

The spelling of 9646540268543 in words is "nine trillion, six hundred forty-six billion, five hundred forty million, two hundred sixty-eight thousand, five hundred forty-three".