217980470211270 has 128 divisors (see below), whose sum is σ = 578215760701824. Its totient is φ = 52260074041344.

The previous prime is 217980470211247. The next prime is 217980470211281. The reversal of 217980470211270 is 72112074089712.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35656317 + ... + 41319896.

It is an arithmetic number, because the mean of its divisors is an integer number (4517310630483).

Almost surely, 2^{217980470211270} is an apocalyptic number.

217980470211270 is an abundant number, since it is smaller than the sum of its proper divisors (360235290490554).

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

217980470211270 is a wasteful number, since it uses less digits than its factorization.

217980470211270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76976426.

The product of its (nonzero) digits is 790272, while the sum is 51.

The spelling of 217980470211270 in words is "two hundred seventeen trillion, nine hundred eighty billion, four hundred seventy million, two hundred eleven thousand, two hundred seventy".