216302290713961 has 3 divisors (see below), whose sum is σ = 216302305421181. Its totient is φ = 216302276006742.

The previous prime is 216302290713907. The next prime is 216302290714001. The reversal of 216302290713961 is 169317092203612.

The square root of 216302290713961 is 14707219.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 216302290713961 - 2⁹ = 216302290713449 is a prime.

It is a super-2 number, since 2×216302290713961² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216302290713899 and 216302290713908.

It is not an unprimeable number, because it can be changed into a prime (216302290753961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7353610 + ... + 22060828.

It is an arithmetic number, because the mean of its divisors is an integer number (72100768473727).

Almost surely, 2^{216302290713961} is an apocalyptic number.

216302290713961 is the 14707219-th square number.

216302290713961 is the 7353610-th centered octagonal number.

It is an amenable number.

216302290713961 is a deficient number, since it is larger than the sum of its proper divisors (14707220).

216302290713961 is an frugal number, since it uses more digits than its factorization.

216302290713961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29414438 (or 14707219 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 216302290713961 in words is "two hundred sixteen trillion, three hundred two billion, two hundred ninety million, seven hundred thirteen thousand, nine hundred sixty-one".