56784820807 has 16 divisors (see below), whose sum is σ = 66800028960. Its totient is φ = 47588889600.

The previous prime is 56784820787. The next prime is 56784820823. The reversal of 56784820807 is 70802848765.

56784820807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56784820807 - 2¹⁹ = 56784296519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56784820837) 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, 152082 + ... + 369727.

It is an arithmetic number, because the mean of its divisors is an integer number (4175001810).

Almost surely, 2^56784820807 is an apocalyptic number.

56784820807 is a deficient number, since it is larger than the sum of its proper divisors (10015208153).

56784820807 is a wasteful number, since it uses less digits than its factorization.

56784820807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522594.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 56784820807 in words is "fifty-six billion, seven hundred eighty-four million, eight hundred twenty thousand, eight hundred seven".