56556380648 has 8 divisors (see below), whose sum is σ = 106043213730. Its totient is φ = 28278190320.

The previous prime is 56556380591. The next prime is 56556380659. The reversal of 56556380648 is 84608365565.

It can be written as a sum of positive squares in only one way, i.e., 46568776804 + 9987603844 = 215798^2 + 99938^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 56556380593 and 56556380602.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3534773783 + ... + 3534773798.

Almost surely, 2^56556380648 is an apocalyptic number.

It is an amenable number.

56556380648 is a deficient number, since it is larger than the sum of its proper divisors (49486833082).

56556380648 is a wasteful number, since it uses less digits than its factorization.

56556380648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7069547587 (or 7069547583 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 56.

The spelling of 56556380648 in words is "fifty-six billion, five hundred fifty-six million, three hundred eighty thousand, six hundred forty-eight".