556821023183 has 4 divisors (see below), whose sum is σ = 556823799048. Its totient is φ = 556818247320.

The previous prime is 556821023149. The next prime is 556821023219. The reversal of 556821023183 is 381320128655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 381320128655 = 5 ⋅76264025731.

It is a cyclic number.

It is not a de Polignac number, because 556821023183 - 2²⁴ = 556804245967 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 (556821025183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061441 + ... + 1496762.

It is an arithmetic number, because the mean of its divisors is an integer number (139205949762).

Almost surely, 2^556821023183 is an apocalyptic number.

556821023183 is a deficient number, since it is larger than the sum of its proper divisors (2775865).

556821023183 is a wasteful number, since it uses less digits than its factorization.

556821023183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775864.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 556821023183 in words is "five hundred fifty-six billion, eight hundred twenty-one million, twenty-three thousand, one hundred eighty-three".