17218151953 has 2 divisors, whose sum is σ = 17218151954. Its totient is φ = 17218151952.

The previous prime is 17218151941. The next prime is 17218151957. The reversal of 17218151953 is 35915181271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16591500864 + 626651089 = 128808^2 + 25033^2 .

It is a cyclic number.

It is not a de Polignac number, because 17218151953 - 2⁵ = 17218151921 is a prime.

It is not a weakly prime, because it can be changed into another prime (17218151957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8609075976 + 8609075977.

It is an arithmetic number, because the mean of its divisors is an integer number (8609075977).

Almost surely, 2^17218151953 is an apocalyptic number.

It is an amenable number.

17218151953 is a deficient number, since it is larger than the sum of its proper divisors (1).

17218151953 is an equidigital number, since it uses as much as digits as its factorization.

17218151953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 43.

The spelling of 17218151953 in words is "seventeen billion, two hundred eighteen million, one hundred fifty-one thousand, nine hundred fifty-three".