11153211643 has 4 divisors (see below), whose sum is σ = 12746527600. Its totient is φ = 9559895688.

The previous prime is 11153211637. The next prime is 11153211647. The reversal of 11153211643 is 34611235111.

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

It is a de Polignac number, because none of the positive numbers 2^k-11153211643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11153211647) 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, 796657968 + ... + 796657981.

It is an arithmetic number, because the mean of its divisors is an integer number (3186631900).

Almost surely, 2^11153211643 is an apocalyptic number.

11153211643 is a deficient number, since it is larger than the sum of its proper divisors (1593315957).

11153211643 is an equidigital number, since it uses as much as digits as its factorization.

11153211643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593315956.

The product of its digits is 2160, while the sum is 28.

Adding to 11153211643 its reverse (34611235111), we get a palindrome (45764446754).

The spelling of 11153211643 in words is "eleven billion, one hundred fifty-three million, two hundred eleven thousand, six hundred forty-three".