147243742453217 has 4 divisors (see below), whose sum is σ = 150376588037376. Its totient is φ = 144110896869060.

The previous prime is 147243742453207. The next prime is 147243742453253. The reversal of 147243742453217 is 712354247342741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 147243742453217 - 2⁴⁰ = 146144230825441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147243742453207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566422792009 + ... + 1566422792102.

It is an arithmetic number, because the mean of its divisors is an integer number (37594147009344).

Almost surely, 2^{147243742453217} is an apocalyptic number.

It is an amenable number.

147243742453217 is a deficient number, since it is larger than the sum of its proper divisors (3132845584159).

147243742453217 is an equidigital number, since it uses as much as digits as its factorization.

147243742453217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132845584158.

The product of its digits is 31610880, while the sum is 56.

Adding to 147243742453217 its reverse (712354247342741), we get a palindrome (859597989795958).

The spelling of 147243742453217 in words is "one hundred forty-seven trillion, two hundred forty-three billion, seven hundred forty-two million, four hundred fifty-three thousand, two hundred seventeen".