5566838897 has 2 divisors, whose sum is σ = 5566838898. Its totient is φ = 5566838896.

The previous prime is 5566838863. The next prime is 5566838903. The reversal of 5566838897 is 7988386655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5456924641 + 109914256 = 73871^2 + 10484^2 .

It is a cyclic number.

It is not a de Polignac number, because 5566838897 - 2¹⁶ = 5566773361 is a prime.

It is not a weakly prime, because it can be changed into another prime (5566838197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2783419448 + 2783419449.

It is an arithmetic number, because the mean of its divisors is an integer number (2783419449).

Almost surely, 2^5566838897 is an apocalyptic number.

It is an amenable number.

5566838897 is a deficient number, since it is larger than the sum of its proper divisors (1).

5566838897 is an equidigital number, since it uses as much as digits as its factorization.

5566838897 is an evil number, because the sum of its binary digits is even.

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

The square root of 5566838897 is about 74611.2518123105. The cubic root of 5566838897 is about 1772.2958384200.

The spelling of 5566838897 in words is "five billion, five hundred sixty-six million, eight hundred thirty-eight thousand, eight hundred ninety-seven".