6403360222720 has 80 divisors (see below), whose sum is σ = 15363094185648. Its totient is φ = 2559669534720.

The previous prime is 6403360222667. The next prime is 6403360222723. The reversal of 6403360222720 is 272220633046.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 6403360222720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6403360222723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3102472 + ... + 4736248.

Almost surely, 2^{6403360222720} 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 6403360222720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7681547092824).

6403360222720 is an abundant number, since it is smaller than the sum of its proper divisors (8959733962928).

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

6403360222720 is a wasteful number, since it uses less digits than its factorization.

6403360222720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635331 (or 1635315 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 37.

Adding to 6403360222720 its reverse (272220633046), we get a palindrome (6675580855766).

The spelling of 6403360222720 in words is "six trillion, four hundred three billion, three hundred sixty million, two hundred twenty-two thousand, seven hundred twenty".