6667530357666 has 16 divisors (see below), whose sum is σ = 14119476051744. Its totient is φ = 2091774229824.

The previous prime is 6667530357659. The next prime is 6667530357679.

6667530357666 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6667530357666² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6667530357597 and 6667530357606.

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, 32683972240 + ... + 32683972443.

It is an arithmetic number, because the mean of its divisors is an integer number (882467253234).

Almost surely, 2^{6667530357666} is an apocalyptic number.

6667530357666 is an abundant number, since it is smaller than the sum of its proper divisors (7451945694078).

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

6667530357666 is a wasteful number, since it uses less digits than its factorization.

6667530357666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65367944705.

The product of its (nonzero) digits is 514382400, while the sum is 66.

The spelling of 6667530357666 in words is "six trillion, six hundred sixty-seven billion, five hundred thirty million, three hundred fifty-seven thousand, six hundred sixty-six".