56788638785 has 4 divisors (see below), whose sum is σ = 68146366548. Its totient is φ = 45430911024.

The previous prime is 56788638769. The next prime is 56788638821. The reversal of 56788638785 is 58783688765.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11397484081 + 45391154704 = 106759^2 + 213052^2 .

It is a cyclic number.

It is not a de Polignac number, because 56788638785 - 2⁴ = 56788638769 is a prime.

It is a super-3 number, since 3×56788638785³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5678863874 + ... + 5678863883.

It is an arithmetic number, because the mean of its divisors is an integer number (17036591637).

Almost surely, 2^56788638785 is an apocalyptic number.

It is an amenable number.

56788638785 is a deficient number, since it is larger than the sum of its proper divisors (11357727763).

56788638785 is a wasteful number, since it uses less digits than its factorization.

56788638785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11357727762.

The product of its digits is 541900800, while the sum is 71.

The spelling of 56788638785 in words is "fifty-six billion, seven hundred eighty-eight million, six hundred thirty-eight thousand, seven hundred eighty-five".