56783656567 has 16 divisors (see below), whose sum is σ = 66149038080. Its totient is φ = 48233656800.

The previous prime is 56783656549. The next prime is 56783656583. The reversal of 56783656567 is 76565638765.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56783656567 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 = 56783656499 and 56783656508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56783656507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2861163 + ... + 2880940.

It is an arithmetic number, because the mean of its divisors is an integer number (4134314880).

Almost surely, 2^56783656567 is an apocalyptic number.

56783656567 is a deficient number, since it is larger than the sum of its proper divisors (9365381513).

56783656567 is a wasteful number, since it uses less digits than its factorization.

56783656567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5742174.

The product of its digits is 190512000, while the sum is 64.

It can be divided in two parts, 567836 and 56567, that added together give a triangular number (624403 = T₁₁₁₇).

The spelling of 56783656567 in words is "fifty-six billion, seven hundred eighty-three million, six hundred fifty-six thousand, five hundred sixty-seven".