378441565144873 has 4 divisors (see below), whose sum is σ = 379456153791748. Its totient is φ = 377426976498000.

The previous prime is 378441565144859. The next prime is 378441565144949.

378441565144873 is nontrivially palindromic in base 10.

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 325742865529104 + 52698699615769 = 18048348^2 + 7259387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378441565144873 is a prime.

It is a super-2 number, since 2×378441565144873² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378441565142873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507294322878 + ... + 507294323623.

It is an arithmetic number, because the mean of its divisors is an integer number (94864038447937).

Almost surely, 2^{378441565144873} is an apocalyptic number.

It is an amenable number.

378441565144873 is a deficient number, since it is larger than the sum of its proper divisors (1014588646875).

378441565144873 is a wasteful number, since it uses less digits than its factorization.

378441565144873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014588646874.

The product of its digits is 1083801600, while the sum is 70.

The spelling of 378441565144873 in words is "three hundred seventy-eight trillion, four hundred forty-one billion, five hundred sixty-five million, one hundred forty-four thousand, eight hundred seventy-three".