217374609423 has 16 divisors (see below), whose sum is σ = 315607420800. Its totient is φ = 132555114720.

The previous prime is 217374609421. The next prime is 217374609469. The reversal of 217374609423 is 324906473712.

It is not a de Polignac number, because 217374609423 - 2¹ = 217374609421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217374609421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65749893 + ... + 65753198.

It is an arithmetic number, because the mean of its divisors is an integer number (19725463800).

Almost surely, 2^217374609423 is an apocalyptic number.

217374609423 is a deficient number, since it is larger than the sum of its proper divisors (98232811377).

217374609423 is a wasteful number, since it uses less digits than its factorization.

217374609423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131503142.

The product of its (nonzero) digits is 1524096, while the sum is 48.

The spelling of 217374609423 in words is "two hundred seventeen billion, three hundred seventy-four million, six hundred nine thousand, four hundred twenty-three".