5566115563 has 2 divisors, whose sum is σ = 5566115564. Its totient is φ = 5566115562.

The previous prime is 5566115549. The next prime is 5566115579. The reversal of 5566115563 is 3655116655.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5566115563 - 2¹⁷ = 5565984491 is a prime.

It is not a weakly prime, because it can be changed into another prime (5566115543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2783057781 + 2783057782.

It is an arithmetic number, because the mean of its divisors is an integer number (2783057782).

Almost surely, 2^5566115563 is an apocalyptic number.

5566115563 is a deficient number, since it is larger than the sum of its proper divisors (1).

5566115563 is an equidigital number, since it uses as much as digits as its factorization.

5566115563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 405000, while the sum is 43.

The square root of 5566115563 is about 74606.4043028479. The cubic root of 5566115563 is about 1772.2190732881.

The spelling of 5566115563 in words is "five billion, five hundred sixty-six million, one hundred fifteen thousand, five hundred sixty-three".