11665628063 has 4 divisors (see below), whose sum is σ = 11665844568. Its totient is φ = 11665411560.

The previous prime is 11665628057. The next prime is 11665628069. The reversal of 11665628063 is 36082656611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (11665628057) and next prime (11665628069).

It is a cyclic number.

It is not a de Polignac number, because 11665628063 - 2⁴ = 11665628047 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 (11665628069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43220 + ... + 158742.

It is an arithmetic number, because the mean of its divisors is an integer number (2916461142).

Almost surely, 2^11665628063 is an apocalyptic number.

11665628063 is a deficient number, since it is larger than the sum of its proper divisors (216505).

11665628063 is a wasteful number, since it uses less digits than its factorization.

11665628063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216504.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 11665628063 in words is "eleven billion, six hundred sixty-five million, six hundred twenty-eight thousand, sixty-three".