556023784808771 has 4 divisors (see below), whose sum is σ = 556174183455912. Its totient is φ = 555873386161632.

The previous prime is 556023784808581. The next prime is 556023784808861. The reversal of 556023784808771 is 177808487320655.

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

It is a cyclic number.

It is not a de Polignac number, because 556023784808771 - 2³⁴ = 556006604939587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 556023784808695 and 556023784808704.

It is not an unprimeable number, because it can be changed into a prime (556023784808171) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 75199318025 + ... + 75199325418.

It is an arithmetic number, because the mean of its divisors is an integer number (139043545863978).

Almost surely, 2^{556023784808771} is an apocalyptic number.

556023784808771 is a deficient number, since it is larger than the sum of its proper divisors (150398647141).

556023784808771 is a wasteful number, since it uses less digits than its factorization.

556023784808771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150398647140.

The product of its (nonzero) digits is 632217600, while the sum is 71.

The spelling of 556023784808771 in words is "five hundred fifty-six trillion, twenty-three billion, seven hundred eighty-four million, eight hundred eight thousand, seven hundred seventy-one".