17121948469 has 2 divisors, whose sum is σ = 17121948470. Its totient is φ = 17121948468.

The previous prime is 17121948461. The next prime is 17121948491. The reversal of 17121948469 is 96484912171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15942850225 + 1179098244 = 126265^2 + 34338^2 .

It is an emirp because it is prime and its reverse (96484912171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17121948469 - 2³ = 17121948461 is a prime.

It is a super-2 number, since 2×17121948469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17121948461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8560974234 + 8560974235.

It is an arithmetic number, because the mean of its divisors is an integer number (8560974235).

Almost surely, 2^17121948469 is an apocalyptic number.

It is an amenable number.

17121948469 is a deficient number, since it is larger than the sum of its proper divisors (1).

17121948469 is an equidigital number, since it uses as much as digits as its factorization.

17121948469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 52.

The spelling of 17121948469 in words is "seventeen billion, one hundred twenty-one million, nine hundred forty-eight thousand, four hundred sixty-nine".