20430421333 has 16 divisors (see below), whose sum is σ = 23520468096. Its totient is φ = 17383544640.

The previous prime is 20430421321. The next prime is 20430421367. The reversal of 20430421333 is 33312403402.

It is not a de Polignac number, because 20430421333 - 2²¹ = 20428324181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20430421298 and 20430421307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430421373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787710 + ... + 813232.

It is an arithmetic number, because the mean of its divisors is an integer number (1470029256).

Almost surely, 2^20430421333 is an apocalyptic number.

It is an amenable number.

20430421333 is a deficient number, since it is larger than the sum of its proper divisors (3090046763).

20430421333 is a wasteful number, since it uses less digits than its factorization.

20430421333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26364.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20430421333 its reverse (33312403402), we get a palindrome (53742824735).

The spelling of 20430421333 in words is "twenty billion, four hundred thirty million, four hundred twenty-one thousand, three hundred thirty-three".