1217666903967 has 16 divisors (see below), whose sum is σ = 1817118499680. Its totient is φ = 805852547136.

The previous prime is 1217666903911. The next prime is 1217666903987. The reversal of 1217666903967 is 7693096667121.

It is not a de Polignac number, because 1217666903967 - 2¹⁴ = 1217666887583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217666903987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164590368 + ... + 164597765.

It is an arithmetic number, because the mean of its divisors is an integer number (113569906230).

Almost surely, 2^{1217666903967} is an apocalyptic number.

1217666903967 is a deficient number, since it is larger than the sum of its proper divisors (599451595713).

1217666903967 is a wasteful number, since it uses less digits than its factorization.

1217666903967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329188279 (or 329188273 counting only the distinct ones).

The product of its (nonzero) digits is 30862944, while the sum is 63.

The spelling of 1217666903967 in words is "one trillion, two hundred seventeen billion, six hundred sixty-six million, nine hundred three thousand, nine hundred sixty-seven".