20344343430401 has 16 divisors (see below), whose sum is σ = 21408383466624. Its totient is φ = 19295918889984.

The previous prime is 20344343430379. The next prime is 20344343430473. The reversal of 20344343430401 is 10403434344302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20344343430401 is a prime.

It is a super-2 number, since 2×20344343430401² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344343430001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6101546 + ... + 8827091.

It is an arithmetic number, because the mean of its divisors is an integer number (1338023966664).

Almost surely, 2^{20344343430401} is an apocalyptic number.

It is an amenable number.

20344343430401 is a deficient number, since it is larger than the sum of its proper divisors (1064040036223).

20344343430401 is a wasteful number, since it uses less digits than its factorization.

20344343430401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14929160.

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 20344343430401 its reverse (10403434344302), we get a palindrome (30747777774703).

The spelling of 20344343430401 in words is "twenty trillion, three hundred forty-four billion, three hundred forty-three million, four hundred thirty thousand, four hundred one".