660106067120 has 80 divisors (see below), whose sum is σ = 1562146587648. Its totient is φ = 259351192320.

The previous prime is 660106067111. The next prime is 660106067123. The reversal of 660106067120 is 21760601066.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (660106067123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1682465 + ... + 2037375.

Almost surely, 2^660106067120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660106067120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781073293824).

660106067120 is an abundant number, since it is smaller than the sum of its proper divisors (902040520528).

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

660106067120 is a wasteful number, since it uses less digits than its factorization.

660106067120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355338 (or 355332 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

Adding to 660106067120 its reverse (21760601066), we get a palindrome (681866668186).

The spelling of 660106067120 in words is "six hundred sixty billion, one hundred six million, sixty-seven thousand, one hundred twenty".