666066060504 has 160 divisors (see below), whose sum is σ = 2012654952000. Its totient is φ = 204581749248.

The previous prime is 666066060461. The next prime is 666066060553. The reversal of 666066060504 is 405060660666.

It is a self number, because there is not a number n which added to its sum of digits gives 666066060504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4723777 + ... + 4862735.

It is an arithmetic number, because the mean of its divisors is an integer number (12579093450).

Almost surely, 2^666066060504 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 666066060504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006327476000).

666066060504 is an abundant number, since it is smaller than the sum of its proper divisors (1346588891496).

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

666066060504 is a wasteful number, since it uses less digits than its factorization.

666066060504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139559 (or 139546 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 666066060504 in words is "six hundred sixty-six billion, sixty-six million, sixty thousand, five hundred four".