66668133467 has 16 divisors (see below), whose sum is σ = 72226909440. Its totient is φ = 61171135392.

The previous prime is 66668133461. The next prime is 66668133473. The reversal of 66668133467 is 76433186666.

It is an interprime number because it is at equal distance from previous prime (66668133461) and next prime (66668133473).

It is a cyclic number.

It is not a de Polignac number, because 66668133467 - 2¹⁴ = 66668117083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66668133461) 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, 8203268 + ... + 8211390.

It is an arithmetic number, because the mean of its divisors is an integer number (4514181840).

Almost surely, 2^66668133467 is an apocalyptic number.

66668133467 is a deficient number, since it is larger than the sum of its proper divisors (5558775973).

66668133467 is a wasteful number, since it uses less digits than its factorization.

66668133467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11842.

The product of its digits is 15676416, while the sum is 56.

The spelling of 66668133467 in words is "sixty-six billion, six hundred sixty-eight million, one hundred thirty-three thousand, four hundred sixty-seven".