217413296871 has 16 divisors (see below), whose sum is σ = 310821696000. Its totient is φ = 134689396608.

The previous prime is 217413296861. The next prime is 217413296909. The reversal of 217413296871 is 178692314712.

It is not a de Polignac number, because 217413296871 - 2⁵ = 217413296839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217413296831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26977021 + ... + 26985078.

It is an arithmetic number, because the mean of its divisors is an integer number (19426356000).

Almost surely, 2^217413296871 is an apocalyptic number.

217413296871 is a deficient number, since it is larger than the sum of its proper divisors (93408399129).

217413296871 is a wasteful number, since it uses less digits than its factorization.

217413296871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53962198.

The product of its digits is 1016064, while the sum is 51.

The spelling of 217413296871 in words is "two hundred seventeen billion, four hundred thirteen million, two hundred ninety-six thousand, eight hundred seventy-one".