20234423505 has 32 divisors (see below), whose sum is σ = 32871121920. Its totient is φ = 10627186880.

The previous prime is 20234423479. The next prime is 20234423533. The reversal of 20234423505 is 50532443202.

It is not a de Polignac number, because 20234423505 - 2¹¹ = 20234421457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361066 + ... + 413324.

It is an arithmetic number, because the mean of its divisors is an integer number (1027222560).

Almost surely, 2^20234423505 is an apocalyptic number.

It is an amenable number.

20234423505 is a deficient number, since it is larger than the sum of its proper divisors (12636698415).

20234423505 is a wasteful number, since it uses less digits than its factorization.

20234423505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52661.

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 20234423505 its reverse (50532443202), we get a palindrome (70766866707).

The spelling of 20234423505 in words is "twenty billion, two hundred thirty-four million, four hundred twenty-three thousand, five hundred five".