56783450736 has 120 divisors (see below), whose sum is σ = 166060038144. Its totient is φ = 18783161280.

The previous prime is 56783450729. The next prime is 56783450741. The reversal of 56783450736 is 63705438765.

56783450736 is a `hidden beast` number, since 5 + 6 + 78 + 34 + 507 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 453585 + ... + 565071.

Almost surely, 2^56783450736 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 56783450736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83030019072).

56783450736 is an abundant number, since it is smaller than the sum of its proper divisors (109276587408).

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

56783450736 is a wasteful number, since it uses less digits than its factorization.

56783450736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111641 (or 111623 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 54.

The spelling of 56783450736 in words is "fifty-six billion, seven hundred eighty-three million, four hundred fifty thousand, seven hundred thirty-six".