11353216643 has 4 divisors (see below), whose sum is σ = 11630124408. Its totient is φ = 11076308880.

The previous prime is 11353216627. The next prime is 11353216657. The reversal of 11353216643 is 34661235311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34661235311 = 6011 ⋅5766301.

It is a cyclic number.

It is not a de Polignac number, because 11353216643 - 2⁴ = 11353216627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11353216613) 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, 138453821 + ... + 138453902.

It is an arithmetic number, because the mean of its divisors is an integer number (2907531102).

Almost surely, 2^11353216643 is an apocalyptic number.

11353216643 is a deficient number, since it is larger than the sum of its proper divisors (276907765).

11353216643 is an equidigital number, since it uses as much as digits as its factorization.

11353216643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276907764.

The product of its digits is 38880, while the sum is 35.

The spelling of 11353216643 in words is "eleven billion, three hundred fifty-three million, two hundred sixteen thousand, six hundred forty-three".