5056566661 has 8 divisors (see below), whose sum is σ = 5117184000. Its totient is φ = 4996305360.

The previous prime is 5056566637. The next prime is 5056566677. The reversal of 5056566661 is 1666656505.

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

It is a cyclic number.

It is not a de Polignac number, because 5056566661 - 2⁷ = 5056566533 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 (5056566461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60381 + ... + 117298.

It is an arithmetic number, because the mean of its divisors is an integer number (639648000).

Almost surely, 2^5056566661 is an apocalyptic number.

It is an amenable number.

5056566661 is a deficient number, since it is larger than the sum of its proper divisors (60617339).

5056566661 is a wasteful number, since it uses less digits than its factorization.

5056566661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178019.

The product of its (nonzero) digits is 972000, while the sum is 46.

The square root of 5056566661 is about 71109.5398733531. The cubic root of 5056566661 is about 1716.4002889829.

The spelling of 5056566661 in words is "five billion, fifty-six million, five hundred sixty-six thousand, six hundred sixty-one".