11163640042243 has 4 divisors (see below), whose sum is σ = 12022381583968. Its totient is φ = 10304898500520.

The previous prime is 11163640042241. The next prime is 11163640042259. The reversal of 11163640042243 is 34224004636111.

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

It is not a de Polignac number, because 11163640042243 - 2¹ = 11163640042241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11163640042241) 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, 429370770843 + ... + 429370770868.

It is an arithmetic number, because the mean of its divisors is an integer number (3005595395992).

Almost surely, 2^{11163640042243} is an apocalyptic number.

11163640042243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11163640042243 is a deficient number, since it is larger than the sum of its proper divisors (858741541725).

11163640042243 is an equidigital number, since it uses as much as digits as its factorization.

11163640042243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858741541724.

The product of its (nonzero) digits is 82944, while the sum is 37.

Adding to 11163640042243 its reverse (34224004636111), we get a palindrome (45387644678354).

The spelling of 11163640042243 in words is "eleven trillion, one hundred sixty-three billion, six hundred forty million, forty-two thousand, two hundred forty-three".