21442032014320 has 40 divisors (see below), whose sum is σ = 49913298978336. Its totient is φ = 8566391378688.

The previous prime is 21442032014243. The next prime is 21442032014327. The reversal of 21442032014320 is 2341023024412.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442032014327) 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, 162768547 + ... + 162900226.

Almost surely, 2^{21442032014320} is an apocalyptic number.

21442032014320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21442032014320 is an abundant number, since it is smaller than the sum of its proper divisors (28471266964016).

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

21442032014320 is a wasteful number, since it uses less digits than its factorization.

21442032014320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325669609 (or 325669603 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21442032014320 its reverse (2341023024412), we get a palindrome (23783055038732).

The spelling of 21442032014320 in words is "twenty-one trillion, four hundred forty-two billion, thirty-two million, fourteen thousand, three hundred twenty".