6660195512880 has 320 divisors, whose sum is σ = 26905985906688. Its totient is φ = 1322567516160.

The previous prime is 6660195512837. The next prime is 6660195512881. The reversal of 6660195512880 is 882155910666.

It is a self number, because there is not a number n which added to its sum of digits gives 6660195512880.

It is not an unprimeable number, because it can be changed into a prime (6660195512881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8597956 + ... + 9340515.

Almost surely, 2^{6660195512880} is an apocalyptic number.

6660195512880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6660195512880 is an abundant number, since it is smaller than the sum of its proper divisors (20245790393808).

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

6660195512880 is a wasteful number, since it uses less digits than its factorization.

6660195512880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17938524 (or 17938518 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 57.

The spelling of 6660195512880 in words is "six trillion, six hundred sixty billion, one hundred ninety-five million, five hundred twelve thousand, eight hundred eighty".