11864334641 has 8 divisors (see below), whose sum is σ = 12228992040. Its totient is φ = 11501993088.

The previous prime is 11864334617. The next prime is 11864334649. The reversal of 11864334641 is 14643346811.

It can be written as a sum of positive squares in 4 ways, for example, as 2304384016 + 9559950625 = 48004^2 + 97775^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11864334641 - 2¹⁰ = 11864333617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11864334649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568556 + ... + 589053.

It is an arithmetic number, because the mean of its divisors is an integer number (1528624005).

Almost surely, 2^11864334641 is an apocalyptic number.

It is an amenable number.

11864334641 is a deficient number, since it is larger than the sum of its proper divisors (364657399).

11864334641 is a wasteful number, since it uses less digits than its factorization.

11864334641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157923.

The product of its digits is 165888, while the sum is 41.

The spelling of 11864334641 in words is "eleven billion, eight hundred sixty-four million, three hundred thirty-four thousand, six hundred forty-one".