1217038009208 has 24 divisors (see below), whose sum is σ = 2654508924000. Its totient is φ = 521587718064.

The previous prime is 1217038009199. The next prime is 1217038009211. The reversal of 1217038009208 is 8029008307121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1552344008 + ... + 1552344791.

It is an arithmetic number, because the mean of its divisors is an integer number (110604538500).

Almost surely, 2^{1217038009208} is an apocalyptic number.

It is an amenable number.

1217038009208 is an abundant number, since it is smaller than the sum of its proper divisors (1437470914792).

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

1217038009208 is a wasteful number, since it uses less digits than its factorization.

1217038009208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104688819 (or 3104688808 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 1217038009208 in words is "one trillion, two hundred seventeen billion, thirty-eight million, nine thousand, two hundred eight".