55565506163 has 2 divisors, whose sum is σ = 55565506164. Its totient is φ = 55565506162.

The previous prime is 55565506103. The next prime is 55565506201. The reversal of 55565506163 is 36160556555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55565506163 - 2¹² = 55565502067 is a prime.

It is not a weakly prime, because it can be changed into another prime (55565506103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27782753081 + 27782753082.

It is an arithmetic number, because the mean of its divisors is an integer number (27782753082).

Almost surely, 2^55565506163 is an apocalyptic number.

55565506163 is a deficient number, since it is larger than the sum of its proper divisors (1).

55565506163 is an equidigital number, since it uses as much as digits as its factorization.

55565506163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2025000, while the sum is 47.

The spelling of 55565506163 in words is "fifty-five billion, five hundred sixty-five million, five hundred six thousand, one hundred sixty-three".