1481775866665 has 16 divisors (see below), whose sum is σ = 1790123753808. Its totient is φ = 1177431181056.

The previous prime is 1481775866611. The next prime is 1481775866723. The reversal of 1481775866665 is 5666685771841.

It can be written as a sum of positive squares in 8 ways, for example, as 300387301776 + 1181388564889 = 548076^2 + 1086917^2 .

It is a cyclic number.

It is not a de Polignac number, because 1481775866665 - 2⁷ = 1481775866537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1481775866594 and 1481775866603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1763539 + ... + 2464471.

It is an arithmetic number, because the mean of its divisors is an integer number (111882734613).

Almost surely, 2^{1481775866665} is an apocalyptic number.

It is an amenable number.

1481775866665 is a deficient number, since it is larger than the sum of its proper divisors (308347887143).

1481775866665 is a wasteful number, since it uses less digits than its factorization.

1481775866665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703788.

The product of its digits is 406425600, while the sum is 70.

The spelling of 1481775866665 in words is "one trillion, four hundred eighty-one billion, seven hundred seventy-five million, eight hundred sixty-six thousand, six hundred sixty-five".