22403320400443 has 4 divisors (see below), whose sum is σ = 23126008155328. Its totient is φ = 21680632645560.

The previous prime is 22403320400437. The next prime is 22403320400467. The reversal of 22403320400443 is 34400402330422.

It is a happy number.

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 22403320400443 - 2⁹ = 22403320399931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 722687754853 = 22403320400443 / (2 + 2 + 4 + 0 + 3 + 3 + 2 + 0 + 4 + 0 + 0 + 4 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22403320400423) 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, 361343877396 + ... + 361343877457.

It is an arithmetic number, because the mean of its divisors is an integer number (5781502038832).

Almost surely, 2^{22403320400443} is an apocalyptic number.

22403320400443 is a deficient number, since it is larger than the sum of its proper divisors (722687754885).

22403320400443 is an equidigital number, since it uses as much as digits as its factorization.

22403320400443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722687754884.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 22403320400443 its reverse (34400402330422), we get a palindrome (56803722730865).

The spelling of 22403320400443 in words is "twenty-two trillion, four hundred three billion, three hundred twenty million, four hundred thousand, four hundred forty-three".