11983227817843 has 4 divisors (see below), whose sum is σ = 11983750281720. Its totient is φ = 11982705353968.

The previous prime is 11983227817789. The next prime is 11983227817849. The reversal of 11983227817843 is 34871872238911.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11983227817843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11983227817849) 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, 261197533 + ... + 261243406.

It is an arithmetic number, because the mean of its divisors is an integer number (2995937570430).

Almost surely, 2^{11983227817843} is an apocalyptic number.

11983227817843 is a deficient number, since it is larger than the sum of its proper divisors (522463877).

11983227817843 is an equidigital number, since it uses as much as digits as its factorization.

11983227817843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522463876.

The product of its digits is 32514048, while the sum is 64.

The spelling of 11983227817843 in words is "eleven trillion, nine hundred eighty-three billion, two hundred twenty-seven million, eight hundred seventeen thousand, eight hundred forty-three".