144321261553 has 16 divisors (see below), whose sum is σ = 165686724864. Its totient is φ = 123143454720.

The previous prime is 144321261463. The next prime is 144321261571. The reversal of 144321261553 is 355162123441.

It is a cyclic number.

It is not a de Polignac number, because 144321261553 - 2⁹ = 144321261041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144321261053) 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, 2866033 + ... + 2915953.

It is an arithmetic number, because the mean of its divisors is an integer number (10355420304).

Almost surely, 2^144321261553 is an apocalyptic number.

It is an amenable number.

144321261553 is a deficient number, since it is larger than the sum of its proper divisors (21365463311).

144321261553 is a wasteful number, since it uses less digits than its factorization.

144321261553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51792.

The product of its digits is 86400, while the sum is 37.

Adding to 144321261553 its reverse (355162123441), we get a palindrome (499483384994).

The spelling of 144321261553 in words is "one hundred forty-four billion, three hundred twenty-one million, two hundred sixty-one thousand, five hundred fifty-three".