217048877338 has 16 divisors (see below), whose sum is σ = 335447783424. Its totient is φ = 105251812560.

The previous prime is 217048877333. The next prime is 217048877341. The reversal of 217048877338 is 833778840712.

It is a super-2 number, since 2×217048877338² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (217048877333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4692570 + ... + 4738597.

It is an arithmetic number, because the mean of its divisors is an integer number (20965486464).

Almost surely, 2^217048877338 is an apocalyptic number.

217048877338 is a deficient number, since it is larger than the sum of its proper divisors (118398906086).

217048877338 is a wasteful number, since it uses less digits than its factorization.

217048877338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9431517.

The product of its (nonzero) digits is 12644352, while the sum is 58.

The spelling of 217048877338 in words is "two hundred seventeen billion, forty-eight million, eight hundred seventy-seven thousand, three hundred thirty-eight".