144481223557 has 16 divisors (see below), whose sum is σ = 158904345600. Its totient is φ = 130274688240.

The previous prime is 144481223533. The next prime is 144481223699. The reversal of 144481223557 is 755322184441.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144481223557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144481223507) 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, 1543158 + ... + 1634104.

It is an arithmetic number, because the mean of its divisors is an integer number (9931521600).

Almost surely, 2^144481223557 is an apocalyptic number.

It is an amenable number.

144481223557 is a deficient number, since it is larger than the sum of its proper divisors (14423122043).

144481223557 is a wasteful number, since it uses less digits than its factorization.

144481223557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92136.

The product of its digits is 1075200, while the sum is 46.

The spelling of 144481223557 in words is "one hundred forty-four billion, four hundred eighty-one million, two hundred twenty-three thousand, five hundred fifty-seven".