11322447643 has 16 divisors (see below), whose sum is σ = 12839706880. Its totient is φ = 9897907104.

The previous prime is 11322447629. The next prime is 11322447649. The reversal of 11322447643 is 34674422311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11322447643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11322447649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 893530 + ... + 906112.

It is an arithmetic number, because the mean of its divisors is an integer number (802481680).

Almost surely, 2^11322447643 is an apocalyptic number.

11322447643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11322447643 is a deficient number, since it is larger than the sum of its proper divisors (1517259237).

11322447643 is a wasteful number, since it uses less digits than its factorization.

11322447643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16258.

The product of its digits is 96768, while the sum is 37.

Adding to 11322447643 its reverse (34674422311), we get a palindrome (45996869954).

The spelling of 11322447643 in words is "eleven billion, three hundred twenty-two million, four hundred forty-seven thousand, six hundred forty-three".