20340423411 has 64 divisors (see below), whose sum is σ = 34208317440. Its totient is φ = 10443363840.

The previous prime is 20340423379. The next prime is 20340423463. The reversal of 20340423411 is 11432404302.

It is not a de Polignac number, because 20340423411 - 2⁵ = 20340423379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20340423511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11562750 + ... + 11564508.

It is an arithmetic number, because the mean of its divisors is an integer number (534504960).

Almost surely, 2^20340423411 is an apocalyptic number.

20340423411 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20340423411 is a deficient number, since it is larger than the sum of its proper divisors (13867894029).

20340423411 is a wasteful number, since it uses less digits than its factorization.

20340423411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20340423411 its reverse (11432404302), we get a palindrome (31772827713).

The spelling of 20340423411 in words is "twenty billion, three hundred forty million, four hundred twenty-three thousand, four hundred eleven".