216673317552508 has 12 divisors (see below), whose sum is σ = 384837683414632. Its totient is φ = 106719693719760.

The previous prime is 216673317552479. The next prime is 216673317552547. The reversal of 216673317552508 is 805255713376612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404241263823 + ... + 404241264358.

Almost surely, 2^{216673317552508} is an apocalyptic number.

It is an amenable number.

216673317552508 is a deficient number, since it is larger than the sum of its proper divisors (168164365862124).

216673317552508 is a wasteful number, since it uses less digits than its factorization.

216673317552508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808482528252 (or 808482528250 counting only the distinct ones).

The product of its (nonzero) digits is 63504000, while the sum is 61.

The spelling of 216673317552508 in words is "two hundred sixteen trillion, six hundred seventy-three billion, three hundred seventeen million, five hundred fifty-two thousand, five hundred eight".