144523021521 has 16 divisors (see below), whose sum is σ = 195888712320. Its totient is φ = 94753528320.

The previous prime is 144523021477. The next prime is 144523021537. The reversal of 144523021521 is 125120325441.

It is not a de Polignac number, because 144523021521 - 2⁷ = 144523021393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144523021921) 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, 1101601 + ... + 1225793.

It is an arithmetic number, because the mean of its divisors is an integer number (12243044520).

Almost surely, 2^144523021521 is an apocalyptic number.

It is an amenable number.

144523021521 is a deficient number, since it is larger than the sum of its proper divisors (51365690799).

144523021521 is a wasteful number, since it uses less digits than its factorization.

144523021521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130616.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 144523021521 its reverse (125120325441), we get a palindrome (269643346962).

The spelling of 144523021521 in words is "one hundred forty-four billion, five hundred twenty-three million, twenty-one thousand, five hundred twenty-one".