6543644463456 has 24 divisors (see below), whose sum is σ = 17177066716824. Its totient is φ = 2181214821120.

The previous prime is 6543644463409. The next prime is 6543644463511.

6543644463456 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 6543644463456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34081481485 + ... + 34081481676.

It is an arithmetic number, because the mean of its divisors is an integer number (715711113201).

Almost surely, 2^{6543644463456} is an apocalyptic number.

It is an amenable number.

6543644463456 is an abundant number, since it is smaller than the sum of its proper divisors (10633422253368).

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

6543644463456 is a wasteful number, since it uses less digits than its factorization.

6543644463456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68162963174 (or 68162963166 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 60.

The spelling of 6543644463456 in words is "six trillion, five hundred forty-three billion, six hundred forty-four million, four hundred sixty-three thousand, four hundred fifty-six".