11983455438911 has 4 divisors (see below), whose sum is σ = 13072860478824. Its totient is φ = 10894050399000.

The previous prime is 11983455438841. The next prime is 11983455438931.

11983455438911 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 11983455438911 - 2¹⁰ = 11983455437887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11983455438931) 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, 544702519940 + ... + 544702519961.

It is an arithmetic number, because the mean of its divisors is an integer number (3268215119706).

Almost surely, 2^{11983455438911} is an apocalyptic number.

11983455438911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11983455438911 is a deficient number, since it is larger than the sum of its proper divisors (1089405039913).

11983455438911 is a wasteful number, since it uses less digits than its factorization.

11983455438911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089405039912.

The product of its digits is 18662400, while the sum is 62.

The spelling of 11983455438911 in words is "eleven trillion, nine hundred eighty-three billion, four hundred fifty-five million, four hundred thirty-eight thousand, nine hundred eleven".