556266928817 has 2 divisors, whose sum is σ = 556266928818. Its totient is φ = 556266928816.

The previous prime is 556266928793. The next prime is 556266928897. The reversal of 556266928817 is 718829662655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546311678641 + 9955250176 = 739129^2 + 99776^2 .

It is a cyclic number.

It is not a de Polignac number, because 556266928817 - 2⁶ = 556266928753 is a prime.

It is not a weakly prime, because it can be changed into another prime (556266928897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278133464408 + 278133464409.

It is an arithmetic number, because the mean of its divisors is an integer number (278133464409).

Almost surely, 2^556266928817 is an apocalyptic number.

It is an amenable number.

556266928817 is a deficient number, since it is larger than the sum of its proper divisors (1).

556266928817 is an equidigital number, since it uses as much as digits as its factorization.

556266928817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87091200, while the sum is 65.

The spelling of 556266928817 in words is "five hundred fifty-six billion, two hundred sixty-six million, nine hundred twenty-eight thousand, eight hundred seventeen".