665316265002504 has 128 divisors (see below), whose sum is σ = 1726474088908800. Its totient is φ = 213508240807680.

The previous prime is 665316265002497. The next prime is 665316265002509. The reversal of 665316265002504 is 405200562613566.

It is not an unprimeable number, because it can be changed into a prime (665316265002509) 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 31 ways as a sum of consecutive naturals, for example, 27906942 + ... + 45928530.

It is an arithmetic number, because the mean of its divisors is an integer number (13488078819600).

Almost surely, 2^{665316265002504} 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 665316265002504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863237044454400).

665316265002504 is an abundant number, since it is smaller than the sum of its proper divisors (1061157823906296).

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

665316265002504 is a wasteful number, since it uses less digits than its factorization.

665316265002504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18022155 (or 18022151 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 51.

The spelling of 665316265002504 in words is "six hundred sixty-five trillion, three hundred sixteen billion, two hundred sixty-five million, two thousand, five hundred four".