20344134343232 has 224 divisors, whose sum is σ = 51195829536000. Its totient is φ = 7984247169024.

The previous prime is 20344134343207. The next prime is 20344134343493. The reversal of 20344134343232 is 23234343144302.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13071119 + ... + 14544497.

Almost surely, 2^{20344134343232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20344134343232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25597914768000).

20344134343232 is an abundant number, since it is smaller than the sum of its proper divisors (30851695192768).

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

20344134343232 is a wasteful number, since it uses less digits than its factorization.

20344134343232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473466 (or 1473442 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 38.

Adding to 20344134343232 its reverse (23234343144302), we get a palindrome (43578477487534).

The spelling of 20344134343232 in words is "twenty trillion, three hundred forty-four billion, one hundred thirty-four million, three hundred forty-three thousand, two hundred thirty-two".