217043248552 has 64 divisors (see below), whose sum is σ = 446106528000. Its totient is φ = 98383597824.

The previous prime is 217043248531. The next prime is 217043248567. The reversal of 217043248552 is 255842340712.

It is a junction number, because it is equal to n+sod(n) for n = 217043248499 and 217043248508.

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, 6751974 + ... + 6784042.

It is an arithmetic number, because the mean of its divisors is an integer number (6970414500).

Almost surely, 2^217043248552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 217043248552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223053264000).

217043248552 is an abundant number, since it is smaller than the sum of its proper divisors (229063279448).

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

217043248552 is a wasteful number, since it uses less digits than its factorization.

217043248552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33250 (or 33246 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 43.

The spelling of 217043248552 in words is "two hundred seventeen billion, forty-three million, two hundred forty-eight thousand, five hundred fifty-two".