660469159875168 has 1728 divisors, whose sum is σ = 2407030902057600. Its totient is φ = 171534102921216.

The previous prime is 660469159875157. The next prime is 660469159875169. The reversal of 660469159875168 is 861578951964066.

660469159875168 is a `hidden beast` number, since 6 + 6 + 0 + 4 + 6 + 9 + 1 + 5 + 98 + 7 + 516 + 8 = 666.

It is a super-2 number, since 2×660469159875168² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660469159875169) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 96320422396 + ... + 96320429252.

It is an arithmetic number, because the mean of its divisors is an integer number (1392957697950).

Almost surely, 2^{660469159875168} 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 660469159875168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1203515451028800).

660469159875168 is an abundant number, since it is smaller than the sum of its proper divisors (1746561742182432).

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

660469159875168 is a wasteful number, since it uses less digits than its factorization.

660469159875168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7042 (or 6998 counting only the distinct ones).

The product of its (nonzero) digits is 4702924800, while the sum is 81.

The spelling of 660469159875168 in words is "six hundred sixty trillion, four hundred sixty-nine billion, one hundred fifty-nine million, eight hundred seventy-five thousand, one hundred sixty-eight".