665150007065 has 16 divisors (see below), whose sum is σ = 809396841600. Its totient is φ = 524675428992.

The previous prime is 665150007061. The next prime is 665150007079. The reversal of 665150007065 is 560700051566.

It is a cyclic number.

It is not a de Polignac number, because 665150007065 - 2² = 665150007061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665150007061) 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, 1922027 + ... + 2241536.

It is an arithmetic number, because the mean of its divisors is an integer number (50587302600).

Almost surely, 2^665150007065 is an apocalyptic number.

It is an amenable number.

665150007065 is a deficient number, since it is larger than the sum of its proper divisors (144246834535).

665150007065 is a wasteful number, since it uses less digits than its factorization.

665150007065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164016.

The product of its (nonzero) digits is 189000, while the sum is 41.

The spelling of 665150007065 in words is "six hundred sixty-five billion, one hundred fifty million, seven thousand, sixty-five".