381265044065 has 8 divisors (see below), whose sum is σ = 473294537640. Its totient is φ = 294494378752.

The previous prime is 381265044049. The next prime is 381265044089. The reversal of 381265044065 is 560440562183.

It can be written as a sum of positive squares in 4 ways, for example, as 13921168144 + 367343875921 = 117988^2 + 606089^2 .

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 381265044065 - 2⁴ = 381265044049 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1314706904 + ... + 1314707193.

It is an arithmetic number, because the mean of its divisors is an integer number (59161817205).

Almost surely, 2^381265044065 is an apocalyptic number.

It is an amenable number.

381265044065 is a deficient number, since it is larger than the sum of its proper divisors (92029493575).

381265044065 is a wasteful number, since it uses less digits than its factorization.

381265044065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629414131.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 381265044065 in words is "three hundred eighty-one billion, two hundred sixty-five million, forty-four thousand, sixty-five".