666089260992 has 336 divisors, whose sum is σ = 1972582889472. Its totient is φ = 214789294080.

The previous prime is 666089260913. The next prime is 666089261011. The reversal of 666089260992 is 299062980666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1195851178 + ... + 1195851734.

Almost surely, 2^666089260992 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 666089260992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986291444736).

666089260992 is an abundant number, since it is smaller than the sum of its proper divisors (1306493628480).

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

666089260992 is a wasteful number, since it uses less digits than its factorization.

666089260992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1043 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 63.

The spelling of 666089260992 in words is "six hundred sixty-six billion, eighty-nine million, two hundred sixty thousand, nine hundred ninety-two".