665345036841 has 32 divisors (see below), whose sum is σ = 917769968640. Its totient is φ = 428425500096.

The previous prime is 665345036803. The next prime is 665345036887. The reversal of 665345036841 is 148630543566.

665345036841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 665345036841 - 2¹⁸ = 665344774697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665345036141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11634580 + ... + 11691626.

It is an arithmetic number, because the mean of its divisors is an integer number (28680311520).

Almost surely, 2^665345036841 is an apocalyptic number.

It is an amenable number.

665345036841 is a deficient number, since it is larger than the sum of its proper divisors (252424931799).

665345036841 is a wasteful number, since it uses less digits than its factorization.

665345036841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57853.

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 665345036841 in words is "six hundred sixty-five billion, three hundred forty-five million, thirty-six thousand, eight hundred forty-one".