21433403100243 has 8 divisors (see below), whose sum is σ = 28649137312656. Its totient is φ = 14253302144000.

The previous prime is 21433403100209. The next prime is 21433403100289. The reversal of 21433403100243 is 34200130433412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21433403100243 - 2²² = 21433398905939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21433403100243.

It is not an unprimeable number, because it can be changed into a prime (21433403100443) 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 7 ways as a sum of consecutive naturals, for example, 8908312638 + ... + 8908315043.

It is an arithmetic number, because the mean of its divisors is an integer number (3581142164082).

Almost surely, 2^{21433403100243} is an apocalyptic number.

21433403100243 is a deficient number, since it is larger than the sum of its proper divisors (7215734212413).

21433403100243 is a wasteful number, since it uses less digits than its factorization.

21433403100243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17816628085.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 21433403100243 its reverse (34200130433412), we get a palindrome (55633533533655).

The spelling of 21433403100243 in words is "twenty-one trillion, four hundred thirty-three billion, four hundred three million, one hundred thousand, two hundred forty-three".