5566509638 has 4 divisors (see below), whose sum is σ = 8349764460. Its totient is φ = 2783254818.

The previous prime is 5566509587. The next prime is 5566509643. The reversal of 5566509638 is 8369056655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8369056655 = 5 ⋅1673811331.

It is a self number, because there is not a number n which added to its sum of digits gives 5566509638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391627408 + ... + 1391627411.

It is an arithmetic number, because the mean of its divisors is an integer number (2087441115).

Almost surely, 2^5566509638 is an apocalyptic number.

5566509638 is a deficient number, since it is larger than the sum of its proper divisors (2783254822).

5566509638 is a wasteful number, since it uses less digits than its factorization.

5566509638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783254821.

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

The square root of 5566509638 is about 74609.0452827269. The cubic root of 5566509638 is about 1772.2608960364.

The spelling of 5566509638 in words is "five billion, five hundred sixty-six million, five hundred nine thousand, six hundred thirty-eight".