216206885172063 has 32 divisors (see below), whose sum is σ = 289722714112000. Its totient is φ = 143415331871616.

The previous prime is 216206885172013. The next prime is 216206885172077. The reversal of 216206885172063 is 360271588602612.

It is not a de Polignac number, because 216206885172063 - 2³² = 216202590204767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216206885171994 and 216206885172012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216206885172013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15936227106 + ... + 15936240672.

It is an arithmetic number, because the mean of its divisors is an integer number (9053834816000).

Almost surely, 2^{216206885172063} is an apocalyptic number.

216206885172063 is a deficient number, since it is larger than the sum of its proper divisors (73515828939937).

216206885172063 is a wasteful number, since it uses less digits than its factorization.

216206885172063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27151.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 216206885172063 in words is "two hundred sixteen trillion, two hundred six billion, eight hundred eighty-five million, one hundred seventy-two thousand, sixty-three".