20401324011 has 32 divisors (see below), whose sum is σ = 32198526720. Its totient is φ = 12722251392.

The previous prime is 20401323997. The next prime is 20401324049. The reversal of 20401324011 is 11042310402.

20401324011 is a `hidden beast` number, since 20 + 401 + 3 + 240 + 1 + 1 = 666.

It is not a de Polignac number, because 20401324011 - 2¹⁰ = 20401322987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20401324051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61525 + ... + 211158.

It is an arithmetic number, because the mean of its divisors is an integer number (1006203960).

Almost surely, 2^20401324011 is an apocalyptic number.

20401324011 is a deficient number, since it is larger than the sum of its proper divisors (11797202709).

20401324011 is a wasteful number, since it uses less digits than its factorization.

20401324011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272872 (or 272866 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20401324011 its reverse (11042310402), we get a palindrome (31443634413).

The spelling of 20401324011 in words is "twenty billion, four hundred one million, three hundred twenty-four thousand, eleven".