56611166605 has 8 divisors (see below), whose sum is σ = 77638171392. Its totient is φ = 38819085648.

The previous prime is 56611166593. The next prime is 56611166639. The reversal of 56611166605 is 50666111665.

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

It is not a de Polignac number, because 56611166605 - 2¹¹ = 56611164557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 808730917 + ... + 808730986.

It is an arithmetic number, because the mean of its divisors is an integer number (9704771424).

Almost surely, 2^56611166605 is an apocalyptic number.

It is an amenable number.

56611166605 is a deficient number, since it is larger than the sum of its proper divisors (21027004787).

56611166605 is a wasteful number, since it uses less digits than its factorization.

56611166605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617461915.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 56611166605 in words is "fifty-six billion, six hundred eleven million, one hundred sixty-six thousand, six hundred five".