665879465160 has 1152 divisors, whose sum is σ = 2897632483200. Its totient is φ = 131054837760.

The previous prime is 665879465113. The next prime is 665879465177. The reversal of 665879465160 is 61564978566.

665879465160 is a `hidden beast` number, since 6 + 6 + 5 + 8 + 7 + 9 + 465 + 160 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 291923220 + ... + 291925500.

It is an arithmetic number, because the mean of its divisors is an integer number (2515305975).

Almost surely, 2^665879465160 is an apocalyptic number.

665879465160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 665879465160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1448816241600).

665879465160 is an abundant number, since it is smaller than the sum of its proper divisors (2231753018040).

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

665879465160 is a wasteful number, since it uses less digits than its factorization.

665879465160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411 (or 2397 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 63.

The spelling of 665879465160 in words is "six hundred sixty-five billion, eight hundred seventy-nine million, four hundred sixty-five thousand, one hundred sixty".