1005556080563 has 2 divisors, whose sum is σ = 1005556080564. Its totient is φ = 1005556080562.

The previous prime is 1005556080559. The next prime is 1005556080631. The reversal of 1005556080563 is 3650806555001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1005556080563 - 2² = 1005556080559 is a prime.

It is a super-2 number, since 2×1005556080563² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1005556080533) 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 as a sum of consecutive naturals, namely, 502778040281 + 502778040282.

It is an arithmetic number, because the mean of its divisors is an integer number (502778040282).

Almost surely, 2^{1005556080563} is an apocalyptic number.

1005556080563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005556080563 is an equidigital number, since it uses as much as digits as its factorization.

1005556080563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 1005556080563 in words is "one trillion, five billion, five hundred fifty-six million, eighty thousand, five hundred sixty-three".