20344035221406 has 128 divisors (see below), whose sum is σ = 48877201296000. Its totient is φ = 6235242209280.

The previous prime is 20344035221399. The next prime is 20344035221507. The reversal of 20344035221406 is 60412253044302.

20344035221406 is a `hidden beast` number, since 2 + 0 + 34 + 403 + 5 + 2 + 214 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 186675420 + ... + 186784368.

It is an arithmetic number, because the mean of its divisors is an integer number (381853135125).

Almost surely, 2^{20344035221406} is an apocalyptic number.

20344035221406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20344035221406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24438600648000).

20344035221406 is an abundant number, since it is smaller than the sum of its proper divisors (28533166074594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20344035221406 is a wasteful number, since it uses less digits than its factorization.

20344035221406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110011 (or 110005 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 20344035221406 its reverse (60412253044302), we get a palindrome (80756288265708).

The spelling of 20344035221406 in words is "twenty trillion, three hundred forty-four billion, thirty-five million, two hundred twenty-one thousand, four hundred six".