344853616221 has 6 divisors (see below), whose sum is σ = 498121890110. Its totient is φ = 229902410808.

The previous prime is 344853616193. The next prime is 344853616241. The reversal of 344853616221 is 122616358443.

344853616221 is a `hidden beast` number, since 3 + 4 + 4 + 8 + 5 + 3 + 616 + 2 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 301193513721 + 43660102500 = 548811^2 + 208950^2 .

It is not a de Polignac number, because 344853616221 - 2³⁸ = 69975709277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344853616241) 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 5 ways as a sum of consecutive naturals, for example, 19158534226 + ... + 19158534243.

Almost surely, 2^344853616221 is an apocalyptic number.

It is an amenable number.

344853616221 is a deficient number, since it is larger than the sum of its proper divisors (153268273889).

344853616221 is a wasteful number, since it uses less digits than its factorization.

344853616221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38317068475 (or 38317068472 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 344853616221 in words is "three hundred forty-four billion, eight hundred fifty-three million, six hundred sixteen thousand, two hundred twenty-one".