1440120320321 has 2 divisors, whose sum is σ = 1440120320322. Its totient is φ = 1440120320320.

The previous prime is 1440120320291. The next prime is 1440120320347. The reversal of 1440120320321 is 1230230210441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1431526103296 + 8594217025 = 1196464^2 + 92705^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440120320321 - 2⁶ = 1440120320257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440120320371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720060160160 + 720060160161.

It is an arithmetic number, because the mean of its divisors is an integer number (720060160161).

Almost surely, 2^{1440120320321} is an apocalyptic number.

It is an amenable number.

1440120320321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440120320321 is an equidigital number, since it uses as much as digits as its factorization.

1440120320321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1440120320321 its reverse (1230230210441), we get a palindrome (2670350530762).

The spelling of 1440120320321 in words is "one trillion, four hundred forty billion, one hundred twenty million, three hundred twenty thousand, three hundred twenty-one".