217425206000 has 80 divisors (see below), whose sum is σ = 556659773280. Its totient is φ = 81854182400.

The previous prime is 217425205999. The next prime is 217425206041. The reversal of 217425206000 is 602524712.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3163430 + ... + 3231429.

It is an arithmetic number, because the mean of its divisors is an integer number (6958247166).

Almost surely, 2^217425206000 is an apocalyptic number.

217425206000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

217425206000 is an abundant number, since it is smaller than the sum of its proper divisors (339234567280).

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

217425206000 is a wasteful number, since it uses less digits than its factorization.

217425206000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6394899 (or 6394883 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 217425206000 in words is "two hundred seventeen billion, four hundred twenty-five million, two hundred six thousand".