660467118400 has 168 divisors, whose sum is σ = 1643949184536. Its totient is φ = 261141504000.

The previous prime is 660467118373. The next prime is 660467118403. The reversal of 660467118400 is 4811764066.

It can be written as a sum of positive squares in 12 ways, for example, as 1681656064 + 658785462336 = 41008^2 + 811656^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660467118403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109400182 + ... + 109406218.

Almost surely, 2^660467118400 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 660467118400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821974592268).

660467118400 is an abundant number, since it is smaller than the sum of its proper divisors (983482066136).

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

660467118400 is a wasteful number, since it uses less digits than its factorization.

660467118400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6837 (or 6822 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 660467118400 in words is "six hundred sixty billion, four hundred sixty-seven million, one hundred eighteen thousand, four hundred".