6668057809920 has 352 divisors, whose sum is σ = 22977854178048. Its totient is φ = 1640659156992.

The previous prime is 6668057809891. The next prime is 6668057809979. The reversal of 6668057809920 is 299087508666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578467197 + ... + 578478723.

It is an arithmetic number, because the mean of its divisors is an integer number (65277994824).

Almost surely, 2^{6668057809920} is an apocalyptic number.

6668057809920 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 6668057809920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11488927089024).

6668057809920 is an abundant number, since it is smaller than the sum of its proper divisors (16309796368128).

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

6668057809920 is a wasteful number, since it uses less digits than its factorization.

6668057809920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14465 (or 14447 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 66.

The spelling of 6668057809920 in words is "six trillion, six hundred sixty-eight billion, fifty-seven million, eight hundred nine thousand, nine hundred twenty".