666982802304 has 1280 divisors, whose sum is σ = 2662317504000. Its totient is φ = 160777322496.

The previous prime is 666982802273. The next prime is 666982802329. The reversal of 666982802304 is 403208289666.

It is a super-3 number, since 3×666982802304³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 519861247 + ... + 519862529.

It is an arithmetic number, because the mean of its divisors is an integer number (2079935550).

Almost surely, 2^666982802304 is an apocalyptic number.

666982802304 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666982802304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1331158752000).

666982802304 is an abundant number, since it is smaller than the sum of its proper divisors (1995334701696).

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

666982802304 is a wasteful number, since it uses less digits than its factorization.

666982802304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 666982802304 in words is "six hundred sixty-six billion, nine hundred eighty-two million, eight hundred two thousand, three hundred four".