21441255423200 has 72 divisors (see below), whose sum is σ = 52344399306528. Its totient is φ = 8576349050880.

The previous prime is 21441255423173. The next prime is 21441255423299. The reversal of 21441255423200 is 232455214412.

It is a super-2 number, since 2×21441255423200² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51619544 + ... + 52033256.

It is an arithmetic number, because the mean of its divisors is an integer number (727005545924).

Almost surely, 2^{21441255423200} is an apocalyptic number.

21441255423200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21441255423200 is an abundant number, since it is smaller than the sum of its proper divisors (30903143883328).

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

21441255423200 is a wasteful number, since it uses less digits than its factorization.

21441255423200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478516 (or 478503 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 21441255423200 in words is "twenty-one trillion, four hundred forty-one billion, two hundred fifty-five million, four hundred twenty-three thousand, two hundred".