6666661505160 has 128 divisors (see below), whose sum is σ = 22822805289600. Its totient is φ = 1729728380160.

The previous prime is 6666661505129. The next prime is 6666661505167. The reversal of 6666661505160 is 615051666666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 6666661505097 and 6666661505106.

It is not an unprimeable number, because it can be changed into a prime (6666661505167) 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 31 ways as a sum of consecutive naturals, for example, 83376726 + ... + 83456645.

It is an arithmetic number, because the mean of its divisors is an integer number (178303166325).

Almost surely, 2^{6666661505160} is an apocalyptic number.

6666661505160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6666661505160 is an abundant number, since it is smaller than the sum of its proper divisors (16156143784440).

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

6666661505160 is a wasteful number, since it uses less digits than its factorization.

6666661505160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166833428 (or 166833418 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 6666661505160 in words is "six trillion, six hundred sixty-six billion, six hundred sixty-one million, five hundred five thousand, one hundred sixty".