20124404311 has 6 divisors (see below), whose sum is σ = 22120213136. Its totient is φ = 18294912900.

The previous prime is 20124404309. The next prime is 20124404327. The reversal of 20124404311 is 11340442102.

It is a happy number.

It is not a de Polignac number, because 20124404311 - 2¹ = 20124404309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124414311) 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, 83158575 + ... + 83158816.

Almost surely, 2^20124404311 is an apocalyptic number.

20124404311 is a deficient number, since it is larger than the sum of its proper divisors (1995808825).

20124404311 is a wasteful number, since it uses less digits than its factorization.

20124404311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166317413 (or 166317402 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20124404311 its reverse (11340442102), we get a palindrome (31464846413).

The spelling of 20124404311 in words is "twenty billion, one hundred twenty-four million, four hundred four thousand, three hundred eleven".