1440645375626 has 12 divisors (see below), whose sum is σ = 2259008204082. Its totient is φ = 689004309576.

The previous prime is 1440645375613. The next prime is 1440645375661. The reversal of 1440645375626 is 6265735460441.

It can be written as a sum of positive squares in only one way, i.e., 1200350316025 + 240295059601 = 1095605^2 + 490199^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 680833241 + ... + 680835356.

Almost surely, 2^{1440645375626} is an apocalyptic number.

1440645375626 is a deficient number, since it is larger than the sum of its proper divisors (818362828456).

1440645375626 is a wasteful number, since it uses less digits than its factorization.

1440645375626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361668645 (or 1361668622 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 53.

The spelling of 1440645375626 in words is "one trillion, four hundred forty billion, six hundred forty-five million, three hundred seventy-five thousand, six hundred twenty-six".