665148850224 has 80 divisors (see below), whose sum is σ = 1765568588640. Its totient is φ = 215622881280.

The previous prime is 665148850159. The next prime is 665148850229. The reversal of 665148850224 is 422058841566.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (665148850229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3751282 + ... + 3924590.

It is an arithmetic number, because the mean of its divisors is an integer number (22069607358).

Almost surely, 2^665148850224 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 665148850224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882784294320).

665148850224 is an abundant number, since it is smaller than the sum of its proper divisors (1100419738416).

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

665148850224 is a wasteful number, since it uses less digits than its factorization.

665148850224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175518 (or 175512 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 51.

The spelling of 665148850224 in words is "six hundred sixty-five billion, one hundred forty-eight million, eight hundred fifty thousand, two hundred twenty-four".