20154043533 has 16 divisors (see below), whose sum is σ = 28941687936. Its totient is φ = 12401396160.

The previous prime is 20154043531. The next prime is 20154043573. The reversal of 20154043533 is 33534045102.

It is not a de Polignac number, because 20154043533 - 2¹ = 20154043531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20154043533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154043531) 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, 837043 + ... + 860783.

It is an arithmetic number, because the mean of its divisors is an integer number (1808855496).

Almost surely, 2^20154043533 is an apocalyptic number.

It is an amenable number.

20154043533 is a deficient number, since it is larger than the sum of its proper divisors (8787644403).

20154043533 is a wasteful number, since it uses less digits than its factorization.

20154043533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45524.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 20154043533 its reverse (33534045102), we get a palindrome (53688088635).

The spelling of 20154043533 in words is "twenty billion, one hundred fifty-four million, forty-three thousand, five hundred thirty-three".