216644372295 has 32 divisors (see below), whose sum is σ = 373717972992. Its totient is φ = 106534818432.

The previous prime is 216644372279. The next prime is 216644372297. The reversal of 216644372295 is 592273446612.

It is not a de Polignac number, because 216644372295 - 2⁴ = 216644372279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216644372297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456919 + ... + 801288.

It is an arithmetic number, because the mean of its divisors is an integer number (11678686656).

Almost surely, 2^216644372295 is an apocalyptic number.

216644372295 is a deficient number, since it is larger than the sum of its proper divisors (157073600697).

216644372295 is a wasteful number, since it uses less digits than its factorization.

216644372295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259111.

The product of its digits is 4354560, while the sum is 51.

The spelling of 216644372295 in words is "two hundred sixteen billion, six hundred forty-four million, three hundred seventy-two thousand, two hundred ninety-five".