216500631133 has 8 divisors (see below), whose sum is σ = 224102807552. Its totient is φ = 208990602576.

The previous prime is 216500631103. The next prime is 216500631169. The reversal of 216500631133 is 331136005612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216500631133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216500631095 and 216500631104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216500631103) 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, 23032185 + ... + 23041582.

It is an arithmetic number, because the mean of its divisors is an integer number (28012850944).

Almost surely, 2^216500631133 is an apocalyptic number.

It is an amenable number.

216500631133 is a deficient number, since it is larger than the sum of its proper divisors (7602176419).

216500631133 is a wasteful number, since it uses less digits than its factorization.

216500631133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46073931.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 216500631133 its reverse (331136005612), we get a palindrome (547636636745).

The spelling of 216500631133 in words is "two hundred sixteen billion, five hundred million, six hundred thirty-one thousand, one hundred thirty-three".