665360516716 has 96 divisors (see below), whose sum is σ = 1451820339200. Its totient is φ = 260432858880.

The previous prime is 665360516701. The next prime is 665360516731. The reversal of 665360516716 is 617615063566.

It is an interprime number because it is at equal distance from previous prime (665360516701) and next prime (665360516731).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1990501 + ... + 2300611.

Almost surely, 2^665360516716 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 665360516716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725910169600).

665360516716 is an abundant number, since it is smaller than the sum of its proper divisors (786459822484).

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

665360516716 is a wasteful number, since it uses less digits than its factorization.

665360516716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310287 (or 310285 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 52.

The spelling of 665360516716 in words is "six hundred sixty-five billion, three hundred sixty million, five hundred sixteen thousand, seven hundred sixteen".