66666733332 has 96 divisors (see below), whose sum is σ = 158148480000. Its totient is φ = 21856096512.

The previous prime is 66666733297. The next prime is 66666733339. The reversal of 66666733332 is 23333766666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66666733339) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 133600419 + ... + 133600917.

It is an arithmetic number, because the mean of its divisors is an integer number (1647380000).

Almost surely, 2^66666733332 is an apocalyptic number.

It is an amenable number.

66666733332 is an abundant number, since it is smaller than the sum of its proper divisors (91481746668).

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

66666733332 is a wasteful number, since it uses less digits than its factorization.

66666733332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1243 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 51.

The spelling of 66666733332 in words is "sixty-six billion, six hundred sixty-six million, seven hundred thirty-three thousand, three hundred thirty-two".