216434515256163 has 24 divisors (see below), whose sum is σ = 314555878537680. Its totient is φ = 143399775314880.

The previous prime is 216434515256161. The next prime is 216434515256171. The reversal of 216434515256163 is 361652515434612.

216434515256163 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 3 + 4 + 5 + 15 + 2 + 5 + 616 + 3 = 666.

It is not a de Polignac number, because 216434515256163 - 2¹ = 216434515256161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216434515256161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42759193 + ... + 47552261.

It is an arithmetic number, because the mean of its divisors is an integer number (13106494939070).

Almost surely, 2^{216434515256163} is an apocalyptic number.

216434515256163 is a deficient number, since it is larger than the sum of its proper divisors (98121363281517).

216434515256163 is a wasteful number, since it uses less digits than its factorization.

216434515256163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824019 (or 4824016 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 54.

The spelling of 216434515256163 in words is "two hundred sixteen trillion, four hundred thirty-four billion, five hundred fifteen million, two hundred fifty-six thousand, one hundred sixty-three".