13451219989 has 2 divisors, whose sum is σ = 13451219990. Its totient is φ = 13451219988.

The previous prime is 13451219963. The next prime is 13451220011. The reversal of 13451219989 is 98991215431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13330549764 + 120670225 = 115458^2 + 10985^2 .

It is a cyclic number.

It is not a de Polignac number, because 13451219989 - 2²¹ = 13449122837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13451219939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6725609994 + 6725609995.

It is an arithmetic number, because the mean of its divisors is an integer number (6725609995).

Almost surely, 2^13451219989 is an apocalyptic number.

It is an amenable number.

13451219989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13451219989 is an equidigital number, since it uses as much as digits as its factorization.

13451219989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 52.

The spelling of 13451219989 in words is "thirteen billion, four hundred fifty-one million, two hundred nineteen thousand, nine hundred eighty-nine".