6666516656160 has 48 divisors (see below), whose sum is σ = 20999527468416. Its totient is φ = 1777737774848.

The previous prime is 6666516656153. The next prime is 6666516656197. The reversal of 6666516656160 is 616566156666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 6666516656094 and 6666516656103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6944287704 + ... + 6944288663.

It is an arithmetic number, because the mean of its divisors is an integer number (437490155592).

Almost surely, 2^{6666516656160} is an apocalyptic number.

6666516656160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6666516656160 is an abundant number, since it is smaller than the sum of its proper divisors (14333010812256).

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

6666516656160 is a wasteful number, since it uses less digits than its factorization.

6666516656160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13888576385 (or 13888576377 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 60.

The spelling of 6666516656160 in words is "six trillion, six hundred sixty-six billion, five hundred sixteen million, six hundred fifty-six thousand, one hundred sixty".