665672973000 has 256 divisors, whose sum is σ = 2377126103040. Its totient is φ = 151927776000.

The previous prime is 665672972981. The next prime is 665672973001. The reversal of 665672973000 is 379276566.

It is not an unprimeable number, because it can be changed into a prime (665672973001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14319795 + ... + 14366205.

It is an arithmetic number, because the mean of its divisors is an integer number (9285648840).

Almost surely, 2^665672973000 is an apocalyptic number.

665672973000 is a gapful number since it is divisible by the number (60) 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 665672973000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188563051520).

665672973000 is an abundant number, since it is smaller than the sum of its proper divisors (1711453130040).

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

665672973000 is a wasteful number, since it uses less digits than its factorization.

665672973000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47125 (or 47111 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 51.

The spelling of 665672973000 in words is "six hundred sixty-five billion, six hundred seventy-two million, nine hundred seventy-three thousand".