217499057134 has 8 divisors (see below), whose sum is σ = 326618065800. Its totient is φ = 108626368536.

The previous prime is 217499057131. The next prime is 217499057201. The reversal of 217499057134 is 431750994712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217499057131) 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 3 ways as a sum of consecutive naturals, for example, 61577809 + ... + 61581340.

It is an arithmetic number, because the mean of its divisors is an integer number (40827258225).

Almost surely, 2^217499057134 is an apocalyptic number.

217499057134 is a deficient number, since it is larger than the sum of its proper divisors (109119008666).

217499057134 is a wasteful number, since it uses less digits than its factorization.

217499057134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123160034.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 217499057134 in words is "two hundred seventeen billion, four hundred ninety-nine million, fifty-seven thousand, one hundred thirty-four".