11871652320128 has 32 divisors (see below), whose sum is σ = 23651267315520. Its totient is φ = 5935647974400.

The previous prime is 11871652320097. The next prime is 11871652320263. The reversal of 11871652320128 is 82102325617811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×11871652320128² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2941073 + ... + 5691503.

It is an arithmetic number, because the mean of its divisors is an integer number (739102103610).

Almost surely, 2^{11871652320128} is an apocalyptic number.

It is an amenable number.

11871652320128 is a deficient number, since it is larger than the sum of its proper divisors (11779614995392).

11871652320128 is an equidigital number, since it uses as much as digits as its factorization.

11871652320128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784166 (or 2784154 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

Adding to 11871652320128 its reverse (82102325617811), we get a palindrome (93973977937939).

The spelling of 11871652320128 in words is "eleven trillion, eight hundred seventy-one billion, six hundred fifty-two million, three hundred twenty thousand, one hundred twenty-eight".