11640514421323 has 4 divisors (see below), whose sum is σ = 11695682736328. Its totient is φ = 11585346106320.

The previous prime is 11640514421303. The next prime is 11640514421339. The reversal of 11640514421323 is 32312441504611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11640514421323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11640514421303) 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 3 ways as a sum of consecutive naturals, for example, 27584157186 + ... + 27584157607.

It is an arithmetic number, because the mean of its divisors is an integer number (2923920684082).

Almost surely, 2^{11640514421323} is an apocalyptic number.

11640514421323 is a deficient number, since it is larger than the sum of its proper divisors (55168315005).

11640514421323 is an equidigital number, since it uses as much as digits as its factorization.

11640514421323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55168315004.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 11640514421323 its reverse (32312441504611), we get a palindrome (43952955925934).

The spelling of 11640514421323 in words is "eleven trillion, six hundred forty billion, five hundred fourteen million, four hundred twenty-one thousand, three hundred twenty-three".