665014468608 has 896 divisors, whose sum is σ = 2358624572640. Its totient is φ = 183458856960.

The previous prime is 665014468603. The next prime is 665014468621. The reversal of 665014468608 is 806864410566.

665014468608 is a `hidden beast` number, since 66 + 50 + 14 + 468 + 60 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (896).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665014468603) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 6855819216 + ... + 6855819312.

Almost surely, 2^665014468608 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 665014468608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179312286320).

665014468608 is an abundant number, since it is smaller than the sum of its proper divisors (1693610104032).

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

665014468608 is an frugal number, since it uses more digits than its factorization.

665014468608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 665014468608 in words is "six hundred sixty-five billion, fourteen million, four hundred sixty-eight thousand, six hundred eight".