144215225551 has 24 divisors (see below), whose sum is σ = 154363088880. Its totient is φ = 134360595072.

The previous prime is 144215225549. The next prime is 144215225573. The reversal of 144215225551 is 155522512441.

It is not a de Polignac number, because 144215225551 - 2¹ = 144215225549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144215225551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144215225501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73093401 + ... + 73095373.

It is an arithmetic number, because the mean of its divisors is an integer number (6431795370).

Almost surely, 2^144215225551 is an apocalyptic number.

144215225551 is a deficient number, since it is larger than the sum of its proper divisors (10147863329).

144215225551 is an equidigital number, since it uses as much as digits as its factorization.

144215225551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983 (or 2916 counting only the distinct ones).

The product of its digits is 80000, while the sum is 37.

Adding to 144215225551 its reverse (155522512441), we get a palindrome (299737737992).

The spelling of 144215225551 in words is "one hundred forty-four billion, two hundred fifteen million, two hundred twenty-five thousand, five hundred fifty-one".