20154324233 has 6 divisors (see below), whose sum is σ = 21270907674. Its totient is φ = 19093569984.

The previous prime is 20154324227. The next prime is 20154324263. The reversal of 20154324233 is 33242345102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17830795024 + 2323529209 = 133532^2 + 48203^2 .

It is not a de Polignac number, because 20154324233 - 2¹⁶ = 20154258697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20154324196 and 20154324205.

It is not an unprimeable number, because it can be changed into a prime (20154324263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27914216 + ... + 27914937.

It is an arithmetic number, because the mean of its divisors is an integer number (3545151279).

Almost surely, 2^20154324233 is an apocalyptic number.

It is an amenable number.

20154324233 is a deficient number, since it is larger than the sum of its proper divisors (1116583441).

20154324233 is an equidigital number, since it uses as much as digits as its factorization.

20154324233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55829191 (or 55829172 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 20154324233 its reverse (33242345102), we get a palindrome (53396669335).

The spelling of 20154324233 in words is "twenty billion, one hundred fifty-four million, three hundred twenty-four thousand, two hundred thirty-three".