217033743040 has 56 divisors (see below), whose sum is σ = 518140462320. Its totient is φ = 86590276608.

The previous prime is 217033743037. The next prime is 217033743061. The reversal of 217033743040 is 40347330712.

It is a junction number, because it is equal to n+sod(n) for n = 217033742987 and 217033743005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747282 + ... + 996241.

Almost surely, 2^217033743040 is an apocalyptic number.

217033743040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

217033743040 is an abundant number, since it is smaller than the sum of its proper divisors (301106719280).

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

217033743040 is a wasteful number, since it uses less digits than its factorization.

217033743040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743929 (or 1743919 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 34.

The spelling of 217033743040 in words is "two hundred seventeen billion, thirty-three million, seven hundred forty-three thousand, forty".