21433141243 has 16 divisors (see below), whose sum is σ = 22453559296. Its totient is φ = 20435224320.

The previous prime is 21433141237. The next prime is 21433141253. The reversal of 21433141243 is 34214133412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21433141243 - 2⁹ = 21433140731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21433141253) 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, 654580 + ... + 686542.

It is an arithmetic number, because the mean of its divisors is an integer number (1403347456).

Almost surely, 2^21433141243 is an apocalyptic number.

21433141243 is a deficient number, since it is larger than the sum of its proper divisors (1020418053).

21433141243 is a wasteful number, since it uses less digits than its factorization.

21433141243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32314.

The product of its digits is 6912, while the sum is 28.

Adding to 21433141243 its reverse (34214133412), we get a palindrome (55647274655).

The spelling of 21433141243 in words is "twenty-one billion, four hundred thirty-three million, one hundred forty-one thousand, two hundred forty-three".