216405606233 has 8 divisors (see below), whose sum is σ = 216597902400. Its totient is φ = 216213390288.

The previous prime is 216405606211. The next prime is 216405606239. The reversal of 216405606233 is 332606504612.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 216405606233 - 2²² = 216401411929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216405606239) 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, 6208508 + ... + 6243266.

It is an arithmetic number, because the mean of its divisors is an integer number (27074737800).

Almost surely, 2^216405606233 is an apocalyptic number.

It is an amenable number.

216405606233 is a deficient number, since it is larger than the sum of its proper divisors (192296167).

216405606233 is a wasteful number, since it uses less digits than its factorization.

216405606233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40111.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 216405606233 in words is "two hundred sixteen billion, four hundred five million, six hundred six thousand, two hundred thirty-three".