56608048781 has 4 divisors (see below), whose sum is σ = 56651695452. Its totient is φ = 56564402112.

The previous prime is 56608048771. The next prime is 56608048841. The reversal of 56608048781 is 18784080665.

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 33018160681 + 23589888100 = 181709^2 + 153590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56608048781 is a prime.

It is a super-3 number, since 3×56608048781³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56608048751) 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 3 ways as a sum of consecutive naturals, for example, 21821390 + ... + 21823983.

It is an arithmetic number, because the mean of its divisors is an integer number (14162923863).

Almost surely, 2^56608048781 is an apocalyptic number.

It is an amenable number.

56608048781 is a deficient number, since it is larger than the sum of its proper divisors (43646671).

56608048781 is a wasteful number, since it uses less digits than its factorization.

56608048781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43646670.

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 56608048781 in words is "fifty-six billion, six hundred eight million, forty-eight thousand, seven hundred eighty-one".