5556578609 has 2 divisors, whose sum is σ = 5556578610. Its totient is φ = 5556578608.

The previous prime is 5556578593. The next prime is 5556578623. The reversal of 5556578609 is 9068756555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4471864384 + 1084714225 = 66872^2 + 32935^2 .

It is a cyclic number.

It is not a de Polignac number, because 5556578609 - 2⁴ = 5556578593 is a prime.

It is not a weakly prime, because it can be changed into another prime (5556578509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778289304 + 2778289305.

It is an arithmetic number, because the mean of its divisors is an integer number (2778289305).

Almost surely, 2^5556578609 is an apocalyptic number.

It is an amenable number.

5556578609 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556578609 is an equidigital number, since it uses as much as digits as its factorization.

5556578609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340000, while the sum is 56.

The square root of 5556578609 is about 74542.4617852134. The cubic root of 5556578609 is about 1771.2063242827.

The spelling of 5556578609 in words is "five billion, five hundred fifty-six million, five hundred seventy-eight thousand, six hundred nine".