217672732652 has 24 divisors (see below), whose sum is σ = 391270789056. Its totient is φ = 105920221968.

The previous prime is 217672732601. The next prime is 217672732751. The reversal of 217672732652 is 256237276712.

It is a self number, because there is not a number n which added to its sum of digits gives 217672732652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4870598 + ... + 4915085.

It is an arithmetic number, because the mean of its divisors is an integer number (16302949544).

Almost surely, 2^217672732652 is an apocalyptic number.

It is an amenable number.

217672732652 is a deficient number, since it is larger than the sum of its proper divisors (173598056404).

217672732652 is a wasteful number, since it uses less digits than its factorization.

217672732652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9785837 (or 9785835 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 50.

The spelling of 217672732652 in words is "two hundred seventeen billion, six hundred seventy-two million, seven hundred thirty-two thousand, six hundred fifty-two".