5566155566 has 4 divisors (see below), whose sum is σ = 8349233352. Its totient is φ = 2783077782.

The previous prime is 5566155541. The next prime is 5566155593. The reversal of 5566155566 is 6655516655.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

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, 1391538890 + ... + 1391538893.

It is an arithmetic number, because the mean of its divisors is an integer number (2087308338).

Almost surely, 2^5566155566 is an apocalyptic number.

5566155566 is a deficient number, since it is larger than the sum of its proper divisors (2783077786).

5566155566 is a wasteful number, since it uses less digits than its factorization.

5566155566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783077785.

The product of its digits is 4050000, while the sum is 50.

The square root of 5566155566 is about 74606.6723959727. The cubic root of 5566155566 is about 1772.2233188527.

The spelling of 5566155566 in words is "five billion, five hundred sixty-six million, one hundred fifty-five thousand, five hundred sixty-six".