221593041509840 has 160 divisors (see below), whose sum is σ = 691742194166016. Its totient is φ = 63755040890880.

The previous prime is 221593041509813. The next prime is 221593041509887. The reversal of 221593041509840 is 48905140395122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1383492857 + ... + 1383653016.

Almost surely, 2^{221593041509840} is an apocalyptic number.

221593041509840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221593041509840 is an abundant number, since it is smaller than the sum of its proper divisors (470149152656176).

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

221593041509840 is a wasteful number, since it uses less digits than its factorization.

221593041509840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767145917 (or 2767145911 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 221593041509840 in words is "two hundred twenty-one trillion, five hundred ninety-three billion, forty-one million, five hundred nine thousand, eight hundred forty".