556128534066663 has 8 divisors (see below), whose sum is σ = 741505785890688. Its totient is φ = 370751819143544.

The previous prime is 556128534066641. The next prime is 556128534066697. The reversal of 556128534066663 is 366660435821655.

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 556128534066663 - 2¹⁰ = 556128534065639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556128534066594 and 556128534066603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556128534062663) 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, 131802081 + ... + 135956042.

It is an arithmetic number, because the mean of its divisors is an integer number (92688223236336).

Almost surely, 2^{556128534066663} is an apocalyptic number.

556128534066663 is a deficient number, since it is larger than the sum of its proper divisors (185377251824025).

556128534066663 is a wasteful number, since it uses less digits than its factorization.

556128534066663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268450453.

The product of its (nonzero) digits is 559872000, while the sum is 66.

The spelling of 556128534066663 in words is "five hundred fifty-six trillion, one hundred twenty-eight billion, five hundred thirty-four million, sixty-six thousand, six hundred sixty-three".