20400334411 has 2 divisors, whose sum is σ = 20400334412. Its totient is φ = 20400334410.

The previous prime is 20400334351. The next prime is 20400334481. The reversal of 20400334411 is 11443300402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20400334411 - 2¹¹ = 20400332363 is a prime.

It is not a weakly prime, because it can be changed into another prime (20400334481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200167205 + 10200167206.

It is an arithmetic number, because the mean of its divisors is an integer number (10200167206).

Almost surely, 2^20400334411 is an apocalyptic number.

20400334411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20400334411 is an equidigital number, since it uses as much as digits as its factorization.

20400334411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20400334411 its reverse (11443300402), we get a palindrome (31843634813).

The spelling of 20400334411 in words is "twenty billion, four hundred million, three hundred thirty-four thousand, four hundred eleven".