203310218132849 has 2 divisors, whose sum is σ = 203310218132850. Its totient is φ = 203310218132848.

The previous prime is 203310218132843. The next prime is 203310218132851. The reversal of 203310218132849 is 948231812013302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148833168078400 + 54477050054449 = 12199720^2 + 7380857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203310218132849 is a prime.

Together with 203310218132851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (203310218132843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101655109066424 + 101655109066425.

It is an arithmetic number, because the mean of its divisors is an integer number (101655109066425).

Almost surely, 2^{203310218132849} is an apocalyptic number.

It is an amenable number.

203310218132849 is a deficient number, since it is larger than the sum of its proper divisors (1).

203310218132849 is an equidigital number, since it uses as much as digits as its factorization.

203310218132849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 203310218132849 in words is "two hundred three trillion, three hundred ten billion, two hundred eighteen million, one hundred thirty-two thousand, eight hundred forty-nine".