20433405541 has 2 divisors, whose sum is σ = 20433405542. Its totient is φ = 20433405540.

The previous prime is 20433405451. The next prime is 20433405593. The reversal of 20433405541 is 14550433402.

Together with previous prime (20433405451) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19865774916 + 567630625 = 140946^2 + 23825^2 .

It is a cyclic number.

It is not a de Polignac number, because 20433405541 - 2²¹ = 20431308389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20433405841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216702770 + 10216702771.

It is an arithmetic number, because the mean of its divisors is an integer number (10216702771).

Almost surely, 2^20433405541 is an apocalyptic number.

It is an amenable number.

20433405541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20433405541 is an equidigital number, since it uses as much as digits as its factorization.

20433405541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 20433405541 its reverse (14550433402), we get a palindrome (34983838943).

The spelling of 20433405541 in words is "twenty billion, four hundred thirty-three million, four hundred five thousand, five hundred forty-one".