1440220660630 has 32 divisors (see below), whose sum is σ = 2748910237344. Its totient is φ = 541406823936.

The previous prime is 1440220660583. The next prime is 1440220660631. The reversal of 1440220660630 is 360660220441.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440220660631) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6085857 + ... + 6318076.

It is an arithmetic number, because the mean of its divisors is an integer number (85903444917).

Almost surely, 2^{1440220660630} is an apocalyptic number.

1440220660630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1440220660630 is a deficient number, since it is larger than the sum of its proper divisors (1308689576714).

1440220660630 is a wasteful number, since it uses less digits than its factorization.

1440220660630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12404640.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 1440220660630 in words is "one trillion, four hundred forty billion, two hundred twenty million, six hundred sixty thousand, six hundred thirty".