11421619843 has 4 divisors (see below), whose sum is σ = 11615206680. Its totient is φ = 11228033008.

The previous prime is 11421619837. The next prime is 11421619849. The reversal of 11421619843 is 34891612411.

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: 34891612411 = 179 ⋅194925209.

It is an interprime number because it is at equal distance from previous prime (11421619837) and next prime (11421619849).

It is a cyclic number.

It is not a de Polignac number, because 11421619843 - 2⁹ = 11421619331 is a prime.

It is a super-2 number, since 2×11421619843² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11421619796 and 11421619805.

It is not an unprimeable number, because it can be changed into a prime (11421619849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96793330 + ... + 96793447.

It is an arithmetic number, because the mean of its divisors is an integer number (2903801670).

Almost surely, 2^11421619843 is an apocalyptic number.

11421619843 is a deficient number, since it is larger than the sum of its proper divisors (193586837).

11421619843 is an equidigital number, since it uses as much as digits as its factorization.

11421619843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193586836.

The product of its digits is 41472, while the sum is 40.

The spelling of 11421619843 in words is "eleven billion, four hundred twenty-one million, six hundred nineteen thousand, eight hundred forty-three".