665662005311 has 8 divisors (see below), whose sum is σ = 674938970304. Its totient is φ = 656389319040.

The previous prime is 665662005233. The next prime is 665662005341. The reversal of 665662005311 is 113500266566.

665662005311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665662005311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665662005341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755726 + ... + 1379291.

It is an arithmetic number, because the mean of its divisors is an integer number (84367371288).

Almost surely, 2^665662005311 is an apocalyptic number.

665662005311 is a deficient number, since it is larger than the sum of its proper divisors (9276964993).

665662005311 is a wasteful number, since it uses less digits than its factorization.

665662005311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139361.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 665662005311 in words is "six hundred sixty-five billion, six hundred sixty-two million, five thousand, three hundred eleven".