660066180075 has 18 divisors (see below), whose sum is σ = 1182251869604. Its totient is φ = 352035295920.

The previous prime is 660066180047. The next prime is 660066180079. The reversal of 660066180075 is 570081660066.

It is not a de Polignac number, because 660066180075 - 2¹³ = 660066171883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 660066180075.

It is not an unprimeable number, because it can be changed into a prime (660066180079) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1466813509 + ... + 1466813958.

Almost surely, 2^660066180075 is an apocalyptic number.

660066180075 is a deficient number, since it is larger than the sum of its proper divisors (522185689529).

660066180075 is a wasteful number, since it uses less digits than its factorization.

660066180075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933627483 (or 2933627475 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 660066180075 in words is "six hundred sixty billion, sixty-six million, one hundred eighty thousand, seventy-five".