4471721873429 has 2 divisors, whose sum is σ = 4471721873430. Its totient is φ = 4471721873428.

The previous prime is 4471721873417. The next prime is 4471721873453. The reversal of 4471721873429 is 9243781271744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4413255600625 + 58466272804 = 2100775^2 + 241798^2 .

It is a cyclic number.

It is not a de Polignac number, because 4471721873429 - 2⁴⁰ = 3372210245653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4471721875429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2235860936714 + 2235860936715.

It is an arithmetic number, because the mean of its divisors is an integer number (2235860936715).

Almost surely, 2^{4471721873429} is an apocalyptic number.

It is an amenable number.

4471721873429 is a deficient number, since it is larger than the sum of its proper divisors (1).

4471721873429 is an equidigital number, since it uses as much as digits as its factorization.

4471721873429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18966528, while the sum is 59.

The spelling of 4471721873429 in words is "four trillion, four hundred seventy-one billion, seven hundred twenty-one million, eight hundred seventy-three thousand, four hundred twenty-nine".