6660434598840 has 2304 divisors, whose sum is σ = 27385607208960. Its totient is φ = 1448500838400.

The previous prime is 6660434598787. The next prime is 6660434598863. The reversal of 6660434598840 is 488954340666.

It is a super-2 number, since 2×6660434598840² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 52444366857 + ... + 52444366983.

It is an arithmetic number, because the mean of its divisors is an integer number (11886114240).

Almost surely, 2^{6660434598840} is an apocalyptic number.

6660434598840 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 6660434598840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13692803604480).

6660434598840 is an abundant number, since it is smaller than the sum of its proper divisors (20725172610120).

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

6660434598840 is a wasteful number, since it uses less digits than its factorization.

6660434598840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 6660434598840 in words is "six trillion, six hundred sixty billion, four hundred thirty-four million, five hundred ninety-eight thousand, eight hundred forty".