4378306836865 has 48 divisors (see below), whose sum is σ = 5880336802704. Its totient is φ = 3110820180480.

The previous prime is 4378306836863. The next prime is 4378306836931. The reversal of 4378306836865 is 5686386038734.

It can be written as a sum of positive squares in 8 ways, for example, as 214613533696 + 4163693303169 = 463264^2 + 2040513^2 .

It is not a de Polignac number, because 4378306836865 - 2¹ = 4378306836863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4378306836865.

It is not an unprimeable number, because it can be changed into a prime (4378306836863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10603867 + ... + 11009023.

It is an arithmetic number, because the mean of its divisors is an integer number (122507016723).

Almost surely, 2^{4378306836865} is an apocalyptic number.

It is an amenable number.

4378306836865 is a deficient number, since it is larger than the sum of its proper divisors (1502029965839).

4378306836865 is a wasteful number, since it uses less digits than its factorization.

4378306836865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405410 (or 405379 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 67.

The spelling of 4378306836865 in words is "four trillion, three hundred seventy-eight billion, three hundred six million, eight hundred thirty-six thousand, eight hundred sixty-five".