56814816409 has 8 divisors (see below), whose sum is σ = 61188842120. Its totient is φ = 52441312896.

The previous prime is 56814816397. The next prime is 56814816431. The reversal of 56814816409 is 90461841865.

It can be written as a sum of positive squares in 4 ways, for example, as 136539225 + 56678277184 = 11685^2 + 238072^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56814816409 - 2¹³ = 56814808217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56814816439) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 112147 + ... + 355255.

It is an arithmetic number, because the mean of its divisors is an integer number (7648605265).

Almost surely, 2^56814816409 is an apocalyptic number.

It is an amenable number.

56814816409 is a deficient number, since it is larger than the sum of its proper divisors (4374025711).

56814816409 is a wasteful number, since it uses less digits than its factorization.

56814816409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261099.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 56814816409 in words is "fifty-six billion, eight hundred fourteen million, eight hundred sixteen thousand, four hundred nine".