1440236806105 has 8 divisors (see below), whose sum is σ = 1735009009992. Its totient is φ = 1147706216448.

The previous prime is 1440236806051. The next prime is 1440236806123. The reversal of 1440236806105 is 5016086320441.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 155974444096 + 1284262362009 = 394936^2 + 1133253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440236806105 - 2¹³ = 1440236797913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560402142 + ... + 560404711.

It is an arithmetic number, because the mean of its divisors is an integer number (216876126249).

Almost surely, 2^{1440236806105} is an apocalyptic number.

It is an amenable number.

1440236806105 is a deficient number, since it is larger than the sum of its proper divisors (294772203887).

1440236806105 is a wasteful number, since it uses less digits than its factorization.

1440236806105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120807115.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 1440236806105 in words is "one trillion, four hundred forty billion, two hundred thirty-six million, eight hundred six thousand, one hundred five".