144455198217 has 16 divisors (see below), whose sum is σ = 222476455872. Its totient is φ = 82398686720.

The previous prime is 144455198213. The next prime is 144455198231. The reversal of 144455198217 is 712891554441.

It is a cyclic number.

It is not a de Polignac number, because 144455198217 - 2² = 144455198213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 144455198217.

It is not an unprimeable number, because it can be changed into a prime (144455198213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128747388 + ... + 128748509.

It is an arithmetic number, because the mean of its divisors is an integer number (13904778492).

Almost surely, 2^144455198217 is an apocalyptic number.

144455198217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

144455198217 is a deficient number, since it is larger than the sum of its proper divisors (78021257655).

144455198217 is a wasteful number, since it uses less digits than its factorization.

144455198217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257495928.

The product of its digits is 1612800, while the sum is 51.

The spelling of 144455198217 in words is "one hundred forty-four billion, four hundred fifty-five million, one hundred ninety-eight thousand, two hundred seventeen".