217113672671 has 12 divisors (see below), whose sum is σ = 258720824880. Its totient is φ = 181558470240.

The previous prime is 217113672583. The next prime is 217113672703. The reversal of 217113672671 is 176276311712.

It is not a de Polignac number, because 217113672671 - 2¹⁰ = 217113671647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217113672271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54033251 + ... + 54037268.

It is an arithmetic number, because the mean of its divisors is an integer number (21560068740).

Almost surely, 2^217113672671 is an apocalyptic number.

217113672671 is a deficient number, since it is larger than the sum of its proper divisors (41607152209).

217113672671 is a wasteful number, since it uses less digits than its factorization.

217113672671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108070574 (or 108070567 counting only the distinct ones).

The product of its digits is 148176, while the sum is 44.

The spelling of 217113672671 in words is "two hundred seventeen billion, one hundred thirteen million, six hundred seventy-two thousand, six hundred seventy-one".