1217753311340 has 24 divisors (see below), whose sum is σ = 2557742378352. Its totient is φ = 487013624640.

The previous prime is 1217753311337. The next prime is 1217753311361. The reversal of 1217753311340 is 431133577121.

It is a junction number, because it is equal to n+sod(n) for n = 1217753311294 and 1217753311303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5367326 + ... + 5589605.

It is an arithmetic number, because the mean of its divisors is an integer number (106572599098).

Almost surely, 2^{1217753311340} is an apocalyptic number.

1217753311340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1217753311340 is an abundant number, since it is smaller than the sum of its proper divisors (1339989067012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217753311340 is a wasteful number, since it uses less digits than its factorization.

1217753311340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10962497 (or 10962495 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

Adding to 1217753311340 its reverse (431133577121), we get a palindrome (1648886888461).

The spelling of 1217753311340 in words is "one trillion, two hundred seventeen billion, seven hundred fifty-three million, three hundred eleven thousand, three hundred forty".