20173273344 has 576 divisors, whose sum is σ = 71163904000. Its totient is φ = 5633058816.

The previous prime is 20173273331. The next prime is 20173273423. The reversal of 20173273344 is 44337237102.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20173273299 and 20173273308.

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, 158844609 + ... + 158844735.

Almost surely, 2^20173273344 is an apocalyptic number.

20173273344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20173273344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35581952000).

20173273344 is an abundant number, since it is smaller than the sum of its proper divisors (50990630656).

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

20173273344 is an equidigital number, since it uses as much as digits as its factorization.

20173273344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 36.

The spelling of 20173273344 in words is "twenty billion, one hundred seventy-three million, two hundred seventy-three thousand, three hundred forty-four".