13441120356721 has 2 divisors, whose sum is σ = 13441120356722. Its totient is φ = 13441120356720.

The previous prime is 13441120356701. The next prime is 13441120356901. The reversal of 13441120356721 is 12765302114431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8595222561121 + 4845897795600 = 2931761^2 + 2201340^2 .

It is an emirp because it is prime and its reverse (12765302114431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13441120356721 is a prime.

It is not a weakly prime, because it can be changed into another prime (13441120356701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720560178360 + 6720560178361.

It is an arithmetic number, because the mean of its divisors is an integer number (6720560178361).

Almost surely, 2^{13441120356721} is an apocalyptic number.

It is an amenable number.

13441120356721 is a deficient number, since it is larger than the sum of its proper divisors (1).

13441120356721 is an equidigital number, since it uses as much as digits as its factorization.

13441120356721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 13441120356721 in words is "thirteen trillion, four hundred forty-one billion, one hundred twenty million, three hundred fifty-six thousand, seven hundred twenty-one".