21450455250200 has 24 divisors (see below), whose sum is σ = 49872308457180. Its totient is φ = 8580182100000.

The previous prime is 21450455250179. The next prime is 21450455250223. The reversal of 21450455250200 is 205255405412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53626137926 + ... + 53626138325.

Almost surely, 2^{21450455250200} is an apocalyptic number.

21450455250200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21450455250200 is an abundant number, since it is smaller than the sum of its proper divisors (28421853206980).

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

21450455250200 is a wasteful number, since it uses less digits than its factorization.

21450455250200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107252276267 (or 107252276258 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 21450455250200 in words is "twenty-one trillion, four hundred fifty billion, four hundred fifty-five million, two hundred fifty thousand, two hundred".