665130767184 has 240 divisors, whose sum is σ = 2163922750080. Its totient is φ = 189006935040.

The previous prime is 665130767153. The next prime is 665130767227. The reversal of 665130767184 is 481767031566.

665130767184 is a `hidden beast` number, since 66 + 513 + 0 + 7 + 67 + 1 + 8 + 4 = 666.

It is a super-4 number, since 4×665130767184⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 665130767184.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 982279 + ... + 1514969.

It is an arithmetic number, because the mean of its divisors is an integer number (9016344792).

Almost surely, 2^665130767184 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 665130767184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081961375040).

665130767184 is an abundant number, since it is smaller than the sum of its proper divisors (1498791982896).

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

665130767184 is a wasteful number, since it uses less digits than its factorization.

665130767184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532770 (or 532761 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 665130767184 in words is "six hundred sixty-five billion, one hundred thirty million, seven hundred sixty-seven thousand, one hundred eighty-four".