666036256765707 has 32 divisors (see below), whose sum is σ = 1003647881126400. Its totient is φ = 436409847246816.

The previous prime is 666036256765667. The next prime is 666036256765729. The reversal of 666036256765707 is 707567652630666.

It is a de Polignac number, because none of the positive numbers 2^k-666036256765707 is a prime.

It is a super-3 number, since 3×666036256765707³ (a number of 45 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (666036256765777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34519783 + ... + 50236320.

It is an arithmetic number, because the mean of its divisors is an integer number (31363996285200).

Almost surely, 2^{666036256765707} is an apocalyptic number.

666036256765707 is a deficient number, since it is larger than the sum of its proper divisors (337611624360693).

666036256765707 is a wasteful number, since it uses less digits than its factorization.

666036256765707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84761104 (or 84761098 counting only the distinct ones).

The product of its (nonzero) digits is 2400451200, while the sum is 72.

The spelling of 666036256765707 in words is "six hundred sixty-six trillion, thirty-six billion, two hundred fifty-six million, seven hundred sixty-five thousand, seven hundred seven".