56786663808 has 192 divisors, whose sum is σ = 187292196000. Its totient is φ = 16177987584.

The previous prime is 56786663797. The next prime is 56786663819. The reversal of 56786663808 is 80836668765.

It is an interprime number because it is at equal distance from previous prime (56786663797) and next prime (56786663819).

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2836618 + ... + 2856566.

Almost surely, 2^56786663808 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 56786663808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93646098000).

56786663808 is an abundant number, since it is smaller than the sum of its proper divisors (130505532192).

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

56786663808 is a wasteful number, since it uses less digits than its factorization.

56786663808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20329 (or 20314 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 56786663808 in words is "fifty-six billion, seven hundred eighty-six million, six hundred sixty-three thousand, eight hundred eight".