6660889320960 has 2560 divisors, whose sum is σ = 30210603540480. Its totient is φ = 1355330617344.

The previous prime is 6660889320949. The next prime is 6660889321019. The reversal of 6660889320960 is 690239880666.

It is a tau number, because it is divible by the number of its divisors (2560).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 25917857152 + ... + 25917857408.

It is an arithmetic number, because the mean of its divisors is an integer number (11801017008).

Almost surely, 2^{6660889320960} is an apocalyptic number.

6660889320960 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 6660889320960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15105301770240).

6660889320960 is an abundant number, since it is smaller than the sum of its proper divisors (23549714219520).

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

6660889320960 is a wasteful number, since it uses less digits than its factorization.

6660889320960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 6660889320960 in words is "six trillion, six hundred sixty billion, eight hundred eighty-nine million, three hundred twenty thousand, nine hundred sixty".