1440220423165 has 32 divisors (see below), whose sum is σ = 1753097389056. Its totient is φ = 1135734912000.

The previous prime is 1440220423133. The next prime is 1440220423171. The reversal of 1440220423165 is 5613240220441.

It is not a de Polignac number, because 1440220423165 - 2⁵ = 1440220423133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1440220423165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121051497 + ... + 121063393.

It is an arithmetic number, because the mean of its divisors is an integer number (54784293408).

Almost surely, 2^{1440220423165} is an apocalyptic number.

It is an amenable number.

1440220423165 is a deficient number, since it is larger than the sum of its proper divisors (312876965891).

1440220423165 is a wasteful number, since it uses less digits than its factorization.

1440220423165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13069.

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 1440220423165 in words is "one trillion, four hundred forty billion, two hundred twenty million, four hundred twenty-three thousand, one hundred sixty-five".