378820368089 has 4 divisors (see below), whose sum is σ = 382295784420. Its totient is φ = 375344951760.

The previous prime is 378820368079. The next prime is 378820368137. The reversal of 378820368089 is 980863028873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115384540489 + 263435827600 = 339683^2 + 513260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378820368089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378820368029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1737708002 + ... + 1737708219.

It is an arithmetic number, because the mean of its divisors is an integer number (95573946105).

Almost surely, 2^378820368089 is an apocalyptic number.

It is an amenable number.

378820368089 is a deficient number, since it is larger than the sum of its proper divisors (3475416331).

378820368089 is a wasteful number, since it uses less digits than its factorization.

378820368089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475416330.

The product of its (nonzero) digits is 27869184, while the sum is 62.

The spelling of 378820368089 in words is "three hundred seventy-eight billion, eight hundred twenty million, three hundred sixty-eight thousand, eighty-nine".