20433442405 has 16 divisors (see below), whose sum is σ = 25097117760. Its totient is φ = 15962300928.

The previous prime is 20433442391. The next prime is 20433442429. The reversal of 20433442405 is 50424433402.

It is a cyclic number.

It is not a de Polignac number, because 20433442405 - 2¹³ = 20433434213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 959766 + ... + 980824.

It is an arithmetic number, because the mean of its divisors is an integer number (1568569860).

Almost surely, 2^20433442405 is an apocalyptic number.

It is an amenable number.

20433442405 is a deficient number, since it is larger than the sum of its proper divisors (4663675355).

20433442405 is a wasteful number, since it uses less digits than its factorization.

20433442405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25620.

The product of its (nonzero) digits is 46080, while the sum is 31.

Adding to 20433442405 its reverse (50424433402), we get a palindrome (70857875807).

The spelling of 20433442405 in words is "twenty billion, four hundred thirty-three million, four hundred forty-two thousand, four hundred five".