56507551066 has 16 divisors (see below), whose sum is σ = 85933247400. Its totient is φ = 27863232768.

The previous prime is 56507551049. The next prime is 56507551151. The reversal of 56507551066 is 66015570565.

It can be written as a sum of positive squares in 4 ways, for example, as 54342603225 + 2164947841 = 233115^2 + 46529^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 1441980 + ... + 1480648.

Almost surely, 2^56507551066 is an apocalyptic number.

56507551066 is a deficient number, since it is larger than the sum of its proper divisors (29425696334).

56507551066 is a wasteful number, since it uses less digits than its factorization.

56507551066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48753.

The product of its (nonzero) digits is 945000, while the sum is 46.

The spelling of 56507551066 in words is "fifty-six billion, five hundred seven million, five hundred fifty-one thousand, sixty-six".