1440111022451 has 2 divisors, whose sum is σ = 1440111022452. Its totient is φ = 1440111022450.

The previous prime is 1440111022393. The next prime is 1440111022529. The reversal of 1440111022451 is 1542201110441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1440111022451 - 2¹⁸ = 1440110760307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1440111022451.

It is not a weakly prime, because it can be changed into another prime (1440111072451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720055511225 + 720055511226.

It is an arithmetic number, because the mean of its divisors is an integer number (720055511226).

Almost surely, 2^{1440111022451} is an apocalyptic number.

1440111022451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440111022451 is an equidigital number, since it uses as much as digits as its factorization.

1440111022451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 26.

Adding to 1440111022451 its reverse (1542201110441), we get a palindrome (2982312132892).

The spelling of 1440111022451 in words is "one trillion, four hundred forty billion, one hundred eleven million, twenty-two thousand, four hundred fifty-one".