11660061243 has 4 divisors (see below), whose sum is σ = 15546748328. Its totient is φ = 7773374160.

The previous prime is 11660061241. The next prime is 11660061271. The reversal of 11660061243 is 34216006611.

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

It is not a de Polignac number, because 11660061243 - 2¹ = 11660061241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11660061243.

It is not an unprimeable number, because it can be changed into a prime (11660061241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943343538 + ... + 1943343543.

It is an arithmetic number, because the mean of its divisors is an integer number (3886687082).

Almost surely, 2^11660061243 is an apocalyptic number.

11660061243 is a deficient number, since it is larger than the sum of its proper divisors (3886687085).

11660061243 is an equidigital number, since it uses as much as digits as its factorization.

11660061243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886687084.

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 11660061243 its reverse (34216006611), we get a palindrome (45876067854).

The spelling of 11660061243 in words is "eleven billion, six hundred sixty million, sixty-one thousand, two hundred forty-three".