353221135140449 has 2 divisors, whose sum is σ = 353221135140450. Its totient is φ = 353221135140448.

The previous prime is 353221135140427. The next prime is 353221135140457. The reversal of 353221135140449 is 944041531122353.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281790443158225 + 71430691982224 = 16786615^2 + 8451668^2 .

It is an emirp because it is prime and its reverse (944041531122353) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 353221135140449 - 2⁸ = 353221135140193 is a prime.

It is not a weakly prime, because it can be changed into another prime (353221135110449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176610567570224 + 176610567570225.

It is an arithmetic number, because the mean of its divisors is an integer number (176610567570225).

Almost surely, 2^{353221135140449} is an apocalyptic number.

It is an amenable number.

353221135140449 is a deficient number, since it is larger than the sum of its proper divisors (1).

353221135140449 is an equidigital number, since it uses as much as digits as its factorization.

353221135140449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 353221135140449 in words is "three hundred fifty-three trillion, two hundred twenty-one billion, one hundred thirty-five million, one hundred forty thousand, four hundred forty-nine".