21411345403320 has 32 divisors (see below), whose sum is σ = 64234036210320. Its totient is φ = 5709692107520.

The previous prime is 21411345403319. The next prime is 21411345403333. The reversal of 21411345403320 is 2330454311412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89213939061 + ... + 89213939300.

Almost surely, 2^{21411345403320} is an apocalyptic number.

21411345403320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21411345403320 is an abundant number, since it is smaller than the sum of its proper divisors (42822690807000).

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

21411345403320 is a wasteful number, since it uses less digits than its factorization.

21411345403320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178427878375 (or 178427878371 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 21411345403320 its reverse (2330454311412), we get a palindrome (23741799714732).

The spelling of 21411345403320 in words is "twenty-one trillion, four hundred eleven billion, three hundred forty-five million, four hundred three thousand, three hundred twenty".