66668133468 has 24 divisors (see below), whose sum is σ = 156986127760. Its totient is φ = 22018832640.

The previous prime is 66668133461. The next prime is 66668133473. The reversal of 66668133468 is 86433186666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66668133461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25483453 + ... + 25486068.

Almost surely, 2^66668133468 is an apocalyptic number.

It is an amenable number.

66668133468 is an abundant number, since it is smaller than the sum of its proper divisors (90317994292).

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

66668133468 is a wasteful number, since it uses less digits than its factorization.

66668133468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50969637 (or 50969635 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 57.

The spelling of 66668133468 in words is "sixty-six billion, six hundred sixty-eight million, one hundred thirty-three thousand, four hundred sixty-eight".