1378063581578 has 16 divisors (see below), whose sum is σ = 2079555254784. Its totient is φ = 684878822640.

The previous prime is 1378063581569. The next prime is 1378063581593. The reversal of 1378063581578 is 8751853608731.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1378063581578.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10418876 + ... + 10550312.

It is an arithmetic number, because the mean of its divisors is an integer number (129972203424).

Almost surely, 2^{1378063581578} is an apocalyptic number.

1378063581578 is a deficient number, since it is larger than the sum of its proper divisors (701491673206).

1378063581578 is a wasteful number, since it uses less digits than its factorization.

1378063581578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162997.

The product of its (nonzero) digits is 33868800, while the sum is 62.

The spelling of 1378063581578 in words is "one trillion, three hundred seventy-eight billion, sixty-three million, five hundred eighty-one thousand, five hundred seventy-eight".