21343232043 has 24 divisors (see below), whose sum is σ = 35237311200. Its totient is φ = 12194734464.

The previous prime is 21343232041. The next prime is 21343232059. The reversal of 21343232043 is 34023234312.

21343232043 is a `hidden beast` number, since 2 + 134 + 323 + 204 + 3 = 666.

It is not a de Polignac number, because 21343232043 - 2¹ = 21343232041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21343231998 and 21343232016.

It is not an unprimeable number, because it can be changed into a prime (21343232041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 820623 + ... + 846231.

It is an arithmetic number, because the mean of its divisors is an integer number (1468221300).

Almost surely, 2^21343232043 is an apocalyptic number.

21343232043 is a deficient number, since it is larger than the sum of its proper divisors (13894079157).

21343232043 is a wasteful number, since it uses less digits than its factorization.

21343232043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38851 (or 38848 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 21343232043 its reverse (34023234312), we get a palindrome (55366466355).

The spelling of 21343232043 in words is "twenty-one billion, three hundred forty-three million, two hundred thirty-two thousand, forty-three".