11318748665 has 16 divisors (see below), whose sum is σ = 16435965312. Its totient is φ = 7304872704.

The previous prime is 11318748643. The next prime is 11318748667. The reversal of 11318748665 is 56684781311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11318748665 - 2¹⁰ = 11318747641 is a prime.

It is a super-2 number, since 2×11318748665² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11318748667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9510959 + ... + 9512148.

It is an arithmetic number, because the mean of its divisors is an integer number (1027247832).

Almost surely, 2^11318748665 is an apocalyptic number.

It is an amenable number.

11318748665 is a deficient number, since it is larger than the sum of its proper divisors (5117216647).

11318748665 is a wasteful number, since it uses less digits than its factorization.

11318748665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19023136.

The product of its digits is 967680, while the sum is 50.

The spelling of 11318748665 in words is "eleven billion, three hundred eighteen million, seven hundred forty-eight thousand, six hundred sixty-five".