217053550352 has 10 divisors (see below), whose sum is σ = 420541253838. Its totient is φ = 108526775168.

The previous prime is 217053550339. The next prime is 217053550379. The reversal of 217053550352 is 253055350712.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 202028674576 + 15024875776 = 449476^2 + 122576^2 .

It is a super-2 number, since 2×217053550352² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6782923433 + ... + 6782923464.

Almost surely, 2^217053550352 is an apocalyptic number.

It is an amenable number.

217053550352 is a deficient number, since it is larger than the sum of its proper divisors (203487703486).

217053550352 is a wasteful number, since it uses less digits than its factorization.

217053550352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13565846905 (or 13565846899 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 38.

The spelling of 217053550352 in words is "two hundred seventeen billion, fifty-three million, five hundred fifty thousand, three hundred fifty-two".