217154034017216 has 28 divisors (see below), whose sum is σ = 430916636989488. Its totient is φ = 108576613673472.

The previous prime is 217154034017213. The next prime is 217154034017233. The reversal of 217154034017216 is 612710430451712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217154034017213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11448740 + ... + 23777756.

Almost surely, 2^{217154034017216} is an apocalyptic number.

It is an amenable number.

217154034017216 is a deficient number, since it is larger than the sum of its proper divisors (213762602972272).

217154034017216 is a wasteful number, since it uses less digits than its factorization.

217154034017216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12604236 (or 12604226 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

Adding to 217154034017216 its reverse (612710430451712), we get a palindrome (829864464468928).

The spelling of 217154034017216 in words is "two hundred seventeen trillion, one hundred fifty-four billion, thirty-four million, seventeen thousand, two hundred sixteen".