11421814043 has 4 divisors (see below), whose sum is σ = 11485623240. Its totient is φ = 11358004848.

The previous prime is 11421814039. The next prime is 11421814081. The reversal of 11421814043 is 34041812411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34041812411 = 31 ⋅1098122981.

It is a cyclic number.

It is not a de Polignac number, because 11421814043 - 2² = 11421814039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11421813997 and 11421814015.

It is not an unprimeable number, because it can be changed into a prime (11421819043) 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, 31904330 + ... + 31904687.

It is an arithmetic number, because the mean of its divisors is an integer number (2871405810).

Almost surely, 2^11421814043 is an apocalyptic number.

11421814043 is a deficient number, since it is larger than the sum of its proper divisors (63809197).

11421814043 is an equidigital number, since it uses as much as digits as its factorization.

11421814043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63809196.

The product of its (nonzero) digits is 3072, while the sum is 29.

The spelling of 11421814043 in words is "eleven billion, four hundred twenty-one million, eight hundred fourteen thousand, forty-three".