21433368234 has 16 divisors (see below), whose sum is σ = 42874853472. Its totient is φ = 7143103248.

The previous prime is 21433368211. The next prime is 21433368259. The reversal of 21433368234 is 43286333412.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21433368192 and 21433368201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303609 + ... + 367484.

It is an arithmetic number, because the mean of its divisors is an integer number (2679678342).

Almost surely, 2^21433368234 is an apocalyptic number.

21433368234 is an abundant number, since it is smaller than the sum of its proper divisors (21441485238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21433368234 is a wasteful number, since it uses less digits than its factorization.

21433368234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676421.

The product of its digits is 248832, while the sum is 39.

The spelling of 21433368234 in words is "twenty-one billion, four hundred thirty-three million, three hundred sixty-eight thousand, two hundred thirty-four".