56783438765 has 16 divisors (see below), whose sum is σ = 69237058176. Its totient is φ = 44700984000.

The previous prime is 56783438729. The next prime is 56783438771.

56783438765 is nontrivially palindromic in base 10.

56783438765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56783438765 - 2³⁰ = 55709696941 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56783438698 and 56783438707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262601 + ... + 427230.

It is an arithmetic number, because the mean of its divisors is an integer number (4327316136).

Almost surely, 2^56783438765 is an apocalyptic number.

It is an amenable number.

56783438765 is a deficient number, since it is larger than the sum of its proper divisors (12453619411).

56783438765 is a wasteful number, since it uses less digits than its factorization.

56783438765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690100.

The product of its digits is 101606400, while the sum is 62.

It can be divided in two parts, 5678 and 3438765, that added together give a palindrome (3444443).

The spelling of 56783438765 in words is "fifty-six billion, seven hundred eighty-three million, four hundred thirty-eight thousand, seven hundred sixty-five".