667443668332 has 192 divisors, whose sum is σ = 1432432512000. Its totient is φ = 266111290368.

The previous prime is 667443668323. The next prime is 667443668377. The reversal of 667443668332 is 233866344766.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 863445498 + ... + 863446270.

It is an arithmetic number, because the mean of its divisors is an integer number (7460586000).

Almost surely, 2^667443668332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667443668332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716216256000).

667443668332 is an abundant number, since it is smaller than the sum of its proper divisors (764988843668).

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

667443668332 is a wasteful number, since it uses less digits than its factorization.

667443668332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1206 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 58.

The spelling of 667443668332 in words is "six hundred sixty-seven billion, four hundred forty-three million, six hundred sixty-eight thousand, three hundred thirty-two".