216381317933 has 8 divisors (see below), whose sum is σ = 236064391200. Its totient is φ = 196700252080.

The previous prime is 216381317927. The next prime is 216381317941. The reversal of 216381317933 is 339713183612.

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 216381317933 - 2²² = 216377123629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216381317983) 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, 271883 + ... + 711816.

It is an arithmetic number, because the mean of its divisors is an integer number (29508048900).

Almost surely, 2^216381317933 is an apocalyptic number.

It is an amenable number.

216381317933 is a deficient number, since it is larger than the sum of its proper divisors (19683073267).

216381317933 is a wasteful number, since it uses less digits than its factorization.

216381317933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003707.

The product of its digits is 489888, while the sum is 47.

The spelling of 216381317933 in words is "two hundred sixteen billion, three hundred eighty-one million, three hundred seventeen thousand, nine hundred thirty-three".