660071183066 has 4 divisors (see below), whose sum is σ = 990106774602. Its totient is φ = 330035591532.

The previous prime is 660071183041. The next prime is 660071183099. The reversal of 660071183066 is 660381170066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660381170066 = 2 ⋅330190585033.

It can be written as a sum of positive squares in only one way, i.e., 472066559041 + 188004624025 = 687071^2 + 433595^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165017795765 + ... + 165017795768.

Almost surely, 2^660071183066 is an apocalyptic number.

660071183066 is a deficient number, since it is larger than the sum of its proper divisors (330035591536).

660071183066 is a wasteful number, since it uses less digits than its factorization.

660071183066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330035591535.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 660071183066 in words is "six hundred sixty billion, seventy-one million, one hundred eighty-three thousand, sixty-six".