11665064001 has 4 divisors (see below), whose sum is σ = 15553418672. Its totient is φ = 7776709332.

The previous prime is 11665063987. The next prime is 11665064017. The reversal of 11665064001 is 10046056611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11665064001 - 2¹⁴ = 11665047617 is a prime.

It is a super-2 number, since 2×11665064001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11665064001.

It is not an unprimeable number, because it can be changed into a prime (11665014001) 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, 1944177331 + ... + 1944177336.

It is an arithmetic number, because the mean of its divisors is an integer number (3888354668).

Almost surely, 2^11665064001 is an apocalyptic number.

It is an amenable number.

11665064001 is a deficient number, since it is larger than the sum of its proper divisors (3888354671).

11665064001 is an equidigital number, since it uses as much as digits as its factorization.

11665064001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888354670.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 11665064001 in words is "eleven billion, six hundred sixty-five million, sixty-four thousand, one".