660032998919400 has 768 divisors, whose sum is σ = 2143942903872000. Its totient is φ = 167866875904000.

The previous prime is 660032998919389. The next prime is 660032998919447. The reversal of 660032998919400 is 4919899230066.

It is a happy number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 46088464240 + ... + 46088478560.

It is an arithmetic number, because the mean of its divisors is an integer number (2791592322750).

Almost surely, 2^{660032998919400} is an apocalyptic number.

660032998919400 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 660032998919400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071971451936000).

660032998919400 is an abundant number, since it is smaller than the sum of its proper divisors (1483909904952600).

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

660032998919400 is a wasteful number, since it uses less digits than its factorization.

660032998919400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14750 (or 14741 counting only the distinct ones).

The product of its (nonzero) digits is 45349632, while the sum is 66.

The spelling of 660032998919400 in words is "six hundred sixty trillion, thirty-two billion, nine hundred ninety-eight million, nine hundred nineteen thousand, four hundred".