2152343023549 has 2 divisors, whose sum is σ = 2152343023550. Its totient is φ = 2152343023548.

The previous prime is 2152343023487. The next prime is 2152343023559. The reversal of 2152343023549 is 9453203432512.

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., 1808352562500 + 343990461049 = 1344750^2 + 586507^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152343023549 - 2⁹ = 2152343023037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2152343023559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076171511774 + 1076171511775.

It is an arithmetic number, because the mean of its divisors is an integer number (1076171511775).

Almost surely, 2^{2152343023549} is an apocalyptic number.

It is an amenable number.

2152343023549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152343023549 is an equidigital number, since it uses as much as digits as its factorization.

2152343023549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 2152343023549 in words is "two trillion, one hundred fifty-two billion, three hundred forty-three million, twenty-three thousand, five hundred forty-nine".