56544663707520 has 384 divisors, whose sum is σ = 188082292235040. Its totient is φ = 14447646720000.

The previous prime is 56544663707471. The next prime is 56544663707527. The reversal of 56544663707520 is 2570736644565.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56544663707527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 186205410 + ... + 186508830.

Almost surely, 2^{56544663707520} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56544663707520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94041146117520).

56544663707520 is an abundant number, since it is smaller than the sum of its proper divisors (131537628527520).

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

56544663707520 is a wasteful number, since it uses less digits than its factorization.

56544663707520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303606 (or 303563 counting only the distinct ones).

The product of its (nonzero) digits is 127008000, while the sum is 60.

The spelling of 56544663707520 in words is "fifty-six trillion, five hundred forty-four billion, six hundred sixty-three million, seven hundred seven thousand, five hundred twenty".