7666695458066 has 8 divisors (see below), whose sum is σ = 11500066786620. Its totient is φ = 3833339862528.

The previous prime is 7666695458029. The next prime is 7666695458077. The reversal of 7666695458066 is 6608545966667.

It can be written as a sum of positive squares in 2 ways, for example, as 7664708527441 + 1986930625 = 2768521^2 + 44575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×7666695458066³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7666695457984 and 7666695458002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2628431 + ... + 4716146.

Almost surely, 2^{7666695458066} is an apocalyptic number.

7666695458066 is a deficient number, since it is larger than the sum of its proper divisors (3833371328554).

7666695458066 is a wasteful number, since it uses less digits than its factorization.

7666695458066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7866508.

The product of its (nonzero) digits is 2351462400, while the sum is 74.

The spelling of 7666695458066 in words is "seven trillion, six hundred sixty-six billion, six hundred ninety-five million, four hundred fifty-eight thousand, sixty-six".