216453230361 has 12 divisors (see below), whose sum is σ = 312772372692. Its totient is φ = 144247827456.

The previous prime is 216453230353. The next prime is 216453230429. The reversal of 216453230361 is 163032354612.

216453230361 is a `hidden beast` number, since 2 + 1 + 64 + 5 + 3 + 230 + 361 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71052101136 + 145401129225 = 266556^2 + 381315^2 .

It is not a de Polignac number, because 216453230361 - 2³ = 216453230353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216453230561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4501936 + ... + 4549761.

It is an arithmetic number, because the mean of its divisors is an integer number (26064364391).

Almost surely, 2^216453230361 is an apocalyptic number.

It is an amenable number.

216453230361 is a deficient number, since it is larger than the sum of its proper divisors (96319142331).

216453230361 is a wasteful number, since it uses less digits than its factorization.

216453230361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9054360 (or 9054357 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 216453230361 its reverse (163032354612), we get a palindrome (379485584973).

The spelling of 216453230361 in words is "two hundred sixteen billion, four hundred fifty-three million, two hundred thirty thousand, three hundred sixty-one".