56611606665005 has 16 divisors (see below), whose sum is σ = 77656257341184. Its totient is φ = 38810646184320.

The previous prime is 56611606664971. The next prime is 56611606665007. The reversal of 56611606665005 is 50056660611665.

It is a happy number.

It is not a de Polignac number, because 56611606665005 - 2⁶ = 56611606664941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56611606665007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181951577 + ... + 182262446.

It is an arithmetic number, because the mean of its divisors is an integer number (4853516083824).

Almost surely, 2^{56611606665005} is an apocalyptic number.

It is an amenable number.

56611606665005 is a deficient number, since it is larger than the sum of its proper divisors (21044650676179).

56611606665005 is a wasteful number, since it uses less digits than its factorization.

56611606665005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364218476.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 56611606665005 in words is "fifty-six trillion, six hundred eleven billion, six hundred six million, six hundred sixty-five thousand, five".