11585768642 has 54 divisors (see below), whose sum is σ = 20619879219. Its totient is φ = 4868059560.

The previous prime is 11585768641. The next prime is 11585768647. The reversal of 11585768642 is 24686758511.

It can be written as a sum of positive squares in only one way, i.e., 5792884321 + 5792884321 = 76111^2 + 76111^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=76111.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11585768641) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 88440917 + ... + 88441047.

Almost surely, 2^11585768642 is an apocalyptic number.

11585768642 is a deficient number, since it is larger than the sum of its proper divisors (9034110577).

11585768642 is an frugal number, since it uses more digits than its factorization.

11585768642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 223 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 53.

The spelling of 11585768642 in words is "eleven billion, five hundred eighty-five million, seven hundred sixty-eight thousand, six hundred forty-two".