1217353502147 has 2 divisors, whose sum is σ = 1217353502148. Its totient is φ = 1217353502146.

The previous prime is 1217353502137. The next prime is 1217353502227. The reversal of 1217353502147 is 7412053537121.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7412053537121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1217353502147 - 2¹² = 1217353498051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1217353502137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608676751073 + 608676751074.

It is an arithmetic number, because the mean of its divisors is an integer number (608676751074).

Almost surely, 2^{1217353502147} is an apocalyptic number.

1217353502147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217353502147 is an equidigital number, since it uses as much as digits as its factorization.

1217353502147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 1217353502147 in words is "one trillion, two hundred seventeen billion, three hundred fifty-three million, five hundred two thousand, one hundred forty-seven".