13558217873 has 2 divisors, whose sum is σ = 13558217874. Its totient is φ = 13558217872.

The previous prime is 13558217857. The next prime is 13558217969. The reversal of 13558217873 is 37871285531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13182943489 + 375274384 = 114817^2 + 19372^2 .

It is a cyclic number.

It is not a de Polignac number, because 13558217873 - 2⁴ = 13558217857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13558217573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6779108936 + 6779108937.

It is an arithmetic number, because the mean of its divisors is an integer number (6779108937).

Almost surely, 2^13558217873 is an apocalyptic number.

It is an amenable number.

13558217873 is a deficient number, since it is larger than the sum of its proper divisors (1).

13558217873 is an equidigital number, since it uses as much as digits as its factorization.

13558217873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 50.

The spelling of 13558217873 in words is "thirteen billion, five hundred fifty-eight million, two hundred seventeen thousand, eight hundred seventy-three".