20430374133 has 16 divisors (see below), whose sum is σ = 29414591360. Its totient is φ = 12538822464.

The previous prime is 20430374071. The next prime is 20430374177. The reversal of 20430374133 is 33147303402.

It is not a de Polignac number, because 20430374133 - 2⁸ = 20430373877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20430374133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430370133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687673 + ... + 716766.

It is an arithmetic number, because the mean of its divisors is an integer number (1838411960).

Almost surely, 2^20430374133 is an apocalyptic number.

It is an amenable number.

20430374133 is a deficient number, since it is larger than the sum of its proper divisors (8984217227).

20430374133 is a wasteful number, since it uses less digits than its factorization.

20430374133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404828.

The product of its (nonzero) digits is 18144, while the sum is 30.

Adding to 20430374133 its reverse (33147303402), we get a palindrome (53577677535).

The spelling of 20430374133 in words is "twenty billion, four hundred thirty million, three hundred seventy-four thousand, one hundred thirty-three".