20344513265344 has 112 divisors (see below), whose sum is σ = 42817796812800. Its totient is φ = 9557800243200.

The previous prime is 20344513265269. The next prime is 20344513265357. The reversal of 20344513265344 is 44356231544302.

It is a junction number, because it is equal to n+sod(n) for n = 20344513265294 and 20344513265303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4109170069 + ... + 4109175019.

Almost surely, 2^{20344513265344} 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 20344513265344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21408898406400).

20344513265344 is an abundant number, since it is smaller than the sum of its proper divisors (22473283547456).

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

20344513265344 is a wasteful number, since it uses less digits than its factorization.

20344513265344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10566 (or 10556 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 46.

The spelling of 20344513265344 in words is "twenty trillion, three hundred forty-four billion, five hundred thirteen million, two hundred sixty-five thousand, three hundred forty-four".