11421820358347 has 16 divisors (see below), whose sum is σ = 13784717606400. Its totient is φ = 9245038904640.

The previous prime is 11421820358323. The next prime is 11421820358387. The reversal of 11421820358347 is 74385302812411.

It is a happy number.

It is not a de Polignac number, because 11421820358347 - 2⁷ = 11421820358219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11421820358347.

It is not an unprimeable number, because it can be changed into a prime (11421820358387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138026722 + ... + 138109447.

It is an arithmetic number, because the mean of its divisors is an integer number (861544850400).

Almost surely, 2^{11421820358347} is an apocalyptic number.

11421820358347 is a deficient number, since it is larger than the sum of its proper divisors (2362897248053).

11421820358347 is a wasteful number, since it uses less digits than its factorization.

11421820358347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276136506.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 11421820358347 in words is "eleven trillion, four hundred twenty-one billion, eight hundred twenty million, three hundred fifty-eight thousand, three hundred forty-seven".