11640221313 has 24 divisors (see below), whose sum is σ = 19004447520. Its totient is φ = 6301471680.

The previous prime is 11640221293. The next prime is 11640221323. The reversal of 11640221313 is 31312204611.

It is a happy number.

It is not a de Polignac number, because 11640221313 - 2¹³ = 11640213121 is a prime.

It is a super-3 number, since 3×11640221313³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11640221323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2081028 + ... + 2086613.

It is an arithmetic number, because the mean of its divisors is an integer number (791851980).

Almost surely, 2^11640221313 is an apocalyptic number.

It is an amenable number.

11640221313 is a deficient number, since it is larger than the sum of its proper divisors (7364226207).

11640221313 is a wasteful number, since it uses less digits than its factorization.

11640221313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167677 (or 4167670 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 11640221313 its reverse (31312204611), we get a palindrome (42952425924).

The spelling of 11640221313 in words is "eleven billion, six hundred forty million, two hundred twenty-one thousand, three hundred thirteen".