216560500127 has 4 divisors (see below), whose sum is σ = 217024227576. Its totient is φ = 216096772680.

The previous prime is 216560500061. The next prime is 216560500129. The reversal of 216560500127 is 721005065612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216560500127 - 2²⁶ = 216493391263 is a prime.

It is a super-2 number, since 2×216560500127² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216560500129) 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, 231863024 + ... + 231863957.

It is an arithmetic number, because the mean of its divisors is an integer number (54256056894).

Almost surely, 2^216560500127 is an apocalyptic number.

216560500127 is a deficient number, since it is larger than the sum of its proper divisors (463727449).

216560500127 is an equidigital number, since it uses as much as digits as its factorization.

216560500127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463727448.

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 216560500127 its reverse (721005065612), we get a palindrome (937565565739).

The spelling of 216560500127 in words is "two hundred sixteen billion, five hundred sixty million, five hundred thousand, one hundred twenty-seven".