214732145665 has 8 divisors (see below), whose sum is σ = 260042599080. Its totient is φ = 170209700352.

The previous prime is 214732145653. The next prime is 214732145669. The reversal of 214732145665 is 566541237412.

It is a Cunningham number, because it is equal to 463392²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 77304017296 + 137428128369 = 278036^2 + 370713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 214732145665 - 2⁵ = 214732145633 is a prime.

It is a super-2 number, since 2×214732145665² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (214732145669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197001424 + ... + 197002513.

It is an arithmetic number, because the mean of its divisors is an integer number (32505324885).

Almost surely, 2^214732145665 is an apocalyptic number.

It is an amenable number.

214732145665 is a deficient number, since it is larger than the sum of its proper divisors (45310453415).

214732145665 is a wasteful number, since it uses less digits than its factorization.

214732145665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394004051.

The product of its digits is 1209600, while the sum is 46.

The spelling of 214732145665 in words is "two hundred fourteen billion, seven hundred thirty-two million, one hundred forty-five thousand, six hundred sixty-five".