163235425616449 has 2 divisors, whose sum is σ = 163235425616450. Its totient is φ = 163235425616448.

The previous prime is 163235425616383. The next prime is 163235425616521. The reversal of 163235425616449 is 944616524532361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162103314720400 + 1132110896049 = 12731980^2 + 1064007^2 .

It is a cyclic number.

It is not a de Polignac number, because 163235425616449 - 2¹³ = 163235425608257 is a prime.

It is not a weakly prime, because it can be changed into another prime (163235425616849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81617712808224 + 81617712808225.

It is an arithmetic number, because the mean of its divisors is an integer number (81617712808225).

Almost surely, 2^{163235425616449} is an apocalyptic number.

It is an amenable number.

163235425616449 is a deficient number, since it is larger than the sum of its proper divisors (1).

163235425616449 is an equidigital number, since it uses as much as digits as its factorization.

163235425616449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111974400, while the sum is 61.

The spelling of 163235425616449 in words is "one hundred sixty-three trillion, two hundred thirty-five billion, four hundred twenty-five million, six hundred sixteen thousand, four hundred forty-nine".