1243884340217 has 8 divisors (see below), whose sum is σ = 1262396778720. Its totient is φ = 1225508525280.

The previous prime is 1243884340201. The next prime is 1243884340247. The reversal of 1243884340217 is 7120434883421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1243884340217 - 2⁴ = 1243884340201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243884340247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34137548 + ... + 34173965.

It is an arithmetic number, because the mean of its divisors is an integer number (157799597340).

Almost surely, 2^{1243884340217} is an apocalyptic number.

It is an amenable number.

1243884340217 is a deficient number, since it is larger than the sum of its proper divisors (18512438503).

1243884340217 is a wasteful number, since it uses less digits than its factorization.

1243884340217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68311783.

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 1243884340217 in words is "one trillion, two hundred forty-three billion, eight hundred eighty-four million, three hundred forty thousand, two hundred seventeen".