144431524521 has 10 divisors (see below), whose sum is σ = 215755734282. Its totient is φ = 96287682960.

The previous prime is 144431524499. The next prime is 144431524541. The reversal of 144431524521 is 125425134441.

144431524521 is a `hidden beast` number, since 1 + 4 + 443 + 152 + 45 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 107197962921 + 37233561600 = 327411^2 + 192960^2 .

It is not a de Polignac number, because 144431524521 - 2²² = 144427330217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144431524541) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 891552540 + ... + 891552701.

Almost surely, 2^144431524521 is an apocalyptic number.

It is an amenable number.

144431524521 is a deficient number, since it is larger than the sum of its proper divisors (71324209761).

144431524521 is an equidigital number, since it uses as much as digits as its factorization.

144431524521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783105253 (or 1783105244 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

Adding to 144431524521 its reverse (125425134441), we get a palindrome (269856658962).

The spelling of 144431524521 in words is "one hundred forty-four billion, four hundred thirty-one million, five hundred twenty-four thousand, five hundred twenty-one".