11388223643 has 16 divisors (see below), whose sum is σ = 12170054400. Its totient is φ = 10632867840.

The previous prime is 11388223633. The next prime is 11388223681. The reversal of 11388223643 is 34632288311.

It is a cyclic number.

It is not a de Polignac number, because 11388223643 - 2²⁰ = 11387175067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11388223643.

It is not an unprimeable number, because it can be changed into a prime (11388223603) 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, 1442555 + ... + 1450427.

It is an arithmetic number, because the mean of its divisors is an integer number (760628400).

Almost surely, 2^11388223643 is an apocalyptic number.

11388223643 is a deficient number, since it is larger than the sum of its proper divisors (781830757).

11388223643 is a wasteful number, since it uses less digits than its factorization.

11388223643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9542.

The product of its digits is 165888, while the sum is 41.

The spelling of 11388223643 in words is "eleven billion, three hundred eighty-eight million, two hundred twenty-three thousand, six hundred forty-three".