13970785448489 has 2 divisors, whose sum is σ = 13970785448490. Its totient is φ = 13970785448488.

The previous prime is 13970785448483. The next prime is 13970785448497. The reversal of 13970785448489 is 98484458707931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12725508002089 + 1245277446400 = 3567283^2 + 1115920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13970785448489 is a prime.

It is not a weakly prime, because it can be changed into another prime (13970785448483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6985392724244 + 6985392724245.

It is an arithmetic number, because the mean of its divisors is an integer number (6985392724245).

Almost surely, 2^{13970785448489} is an apocalyptic number.

It is an amenable number.

13970785448489 is a deficient number, since it is larger than the sum of its proper divisors (1).

13970785448489 is an equidigital number, since it uses as much as digits as its factorization.

13970785448489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1950842880, while the sum is 77.

The spelling of 13970785448489 in words is "thirteen trillion, nine hundred seventy billion, seven hundred eighty-five million, four hundred forty-eight thousand, four hundred eighty-nine".