1440321013541 has 2 divisors, whose sum is σ = 1440321013542. Its totient is φ = 1440321013540.

The previous prime is 1440321013499. The next prime is 1440321013559. The reversal of 1440321013541 is 1453101230441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 843339172225 + 596981841316 = 918335^2 + 772646^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440321013541 - 2³⁴ = 1423141144357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440321018541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720160506770 + 720160506771.

It is an arithmetic number, because the mean of its divisors is an integer number (720160506771).

Almost surely, 2^{1440321013541} is an apocalyptic number.

It is an amenable number.

1440321013541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440321013541 is an equidigital number, since it uses as much as digits as its factorization.

1440321013541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1440321013541 its reverse (1453101230441), we get a palindrome (2893422243982).

The spelling of 1440321013541 in words is "one trillion, four hundred forty billion, three hundred twenty-one million, thirteen thousand, five hundred forty-one".