56784445571 has 16 divisors (see below), whose sum is σ = 66896741376. Its totient is φ = 47191566336.

The previous prime is 56784445561. The next prime is 56784445603. The reversal of 56784445571 is 17554448765.

It is a cyclic number.

It is not a de Polignac number, because 56784445571 - 2¹⁰ = 56784444547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56784445561) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 771326 + ... + 841731.

It is an arithmetic number, because the mean of its divisors is an integer number (4181046336).

Almost surely, 2^56784445571 is an apocalyptic number.

56784445571 is a deficient number, since it is larger than the sum of its proper divisors (10112295805).

56784445571 is a wasteful number, since it uses less digits than its factorization.

56784445571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613218.

The product of its digits is 18816000, while the sum is 56.

The spelling of 56784445571 in words is "fifty-six billion, seven hundred eighty-four million, four hundred forty-five thousand, five hundred seventy-one".