665027532288 has 1120 divisors, whose sum is σ = 2408739759360. Its totient is φ = 179338199040.

The previous prime is 665027532283. The next prime is 665027532307. The reversal of 665027532288 is 882235720566.

It is a happy number.

665027532288 is a `hidden beast` number, since 6 + 6 + 5 + 0 + 27 + 532 + 2 + 88 = 666.

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 (665027532283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 5076545983 + ... + 5076546113.

Almost surely, 2^665027532288 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 665027532288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1204369879680).

665027532288 is an abundant number, since it is smaller than the sum of its proper divisors (1743712227072).

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

665027532288 is an equidigital number, since it uses as much as digits as its factorization.

665027532288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 665027532288 in words is "six hundred sixty-five billion, twenty-seven million, five hundred thirty-two thousand, two hundred eighty-eight".