13500002353421 has 2 divisors, whose sum is σ = 13500002353422. Its totient is φ = 13500002353420.

The previous prime is 13500002353379. The next prime is 13500002353433. The reversal of 13500002353421 is 12435320000531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12515045350921 + 984957002500 = 3537661^2 + 992450^2 .

It is an emirp because it is prime and its reverse (12435320000531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13500002353421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13500002353441) 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 as a sum of consecutive naturals, namely, 6750001176710 + 6750001176711.

It is an arithmetic number, because the mean of its divisors is an integer number (6750001176711).

Almost surely, 2^{13500002353421} is an apocalyptic number.

It is an amenable number.

13500002353421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13500002353421 is an equidigital number, since it uses as much as digits as its factorization.

13500002353421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 13500002353421 its reverse (12435320000531), we get a palindrome (25935322353952).

The spelling of 13500002353421 in words is "thirteen trillion, five hundred billion, two million, three hundred fifty-three thousand, four hundred twenty-one".