13970785448449 has 4 divisors (see below), whose sum is σ = 13972626381780. Its totient is φ = 13968944515120.

The previous prime is 13970785448441. The next prime is 13970785448483. The reversal of 13970785448449 is 94484458707931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4423723660225 + 9547061788224 = 2103265^2 + 3089832^2 .

It is a cyclic number.

It is not a de Polignac number, because 13970785448449 - 2³ = 13970785448441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13970785448441) 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 in 3 ways as a sum of consecutive naturals, for example, 920455282 + ... + 920470459.

It is an arithmetic number, because the mean of its divisors is an integer number (3493156595445).

Almost surely, 2^{13970785448449} is an apocalyptic number.

It is an amenable number.

13970785448449 is a deficient number, since it is larger than the sum of its proper divisors (1840933331).

13970785448449 is an equidigital number, since it uses as much as digits as its factorization.

13970785448449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840933330.

The product of its (nonzero) digits is 975421440, while the sum is 73.

The spelling of 13970785448449 in words is "thirteen trillion, nine hundred seventy billion, seven hundred eighty-five million, four hundred forty-eight thousand, four hundred forty-nine".