556159456166 has 4 divisors (see below), whose sum is σ = 834239184252. Its totient is φ = 278079728082.

The previous prime is 556159456133. The next prime is 556159456201. The reversal of 556159456166 is 661654951655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661654951655 = 5 ⋅132330990331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139039864040 + ... + 139039864043.

It is an arithmetic number, because the mean of its divisors is an integer number (208559796063).

Almost surely, 2^556159456166 is an apocalyptic number.

556159456166 is a deficient number, since it is larger than the sum of its proper divisors (278079728086).

556159456166 is a wasteful number, since it uses less digits than its factorization.

556159456166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278079728085.

The product of its digits is 29160000, while the sum is 59.

The spelling of 556159456166 in words is "five hundred fifty-six billion, one hundred fifty-nine million, four hundred fifty-six thousand, one hundred sixty-six".