216209001839 has 16 divisors (see below), whose sum is σ = 223970261760. Its totient is φ = 208626774720.

The previous prime is 216209001829. The next prime is 216209001857. The reversal of 216209001839 is 938100902612.

It is a cyclic number.

It is not a de Polignac number, because 216209001839 - 2⁸ = 216209001583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216209001796 and 216209001805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216209001829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459107 + ... + 801995.

It is an arithmetic number, because the mean of its divisors is an integer number (13998141360).

Almost surely, 2^216209001839 is an apocalyptic number.

216209001839 is a deficient number, since it is larger than the sum of its proper divisors (7761259921).

216209001839 is a wasteful number, since it uses less digits than its factorization.

216209001839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343150.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 216209001839 in words is "two hundred sixteen billion, two hundred nine million, one thousand, eight hundred thirty-nine".