216654061577713 has 4 divisors (see below), whose sum is σ = 216654599766528. Its totient is φ = 216653523388900.

The previous prime is 216654061577677. The next prime is 216654061577719. The reversal of 216654061577713 is 317775160456612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216654061577713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216654061577719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268490113 + ... + 269295838.

It is an arithmetic number, because the mean of its divisors is an integer number (54163649941632).

Almost surely, 2^{216654061577713} is an apocalyptic number.

It is an amenable number.

216654061577713 is a deficient number, since it is larger than the sum of its proper divisors (538188815).

216654061577713 is an equidigital number, since it uses as much as digits as its factorization.

216654061577713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538188814.

The product of its (nonzero) digits is 44452800, while the sum is 61.

The spelling of 216654061577713 in words is "two hundred sixteen trillion, six hundred fifty-four billion, sixty-one million, five hundred seventy-seven thousand, seven hundred thirteen".