378844448873 has 4 divisors (see below), whose sum is σ = 413284853328. Its totient is φ = 344404044420.

The previous prime is 378844448803. The next prime is 378844448891.

378844448873 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 378844448873 - 2¹⁸ = 378844186729 is a prime.

It is a super-2 number, since 2×378844448873² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378844448803) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17220202211 + ... + 17220202232.

It is an arithmetic number, because the mean of its divisors is an integer number (103321213332).

Almost surely, 2^378844448873 is an apocalyptic number.

It is an amenable number.

378844448873 is a deficient number, since it is larger than the sum of its proper divisors (34440404455).

378844448873 is a wasteful number, since it uses less digits than its factorization.

378844448873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34440404454.

The product of its digits is 462422016, while the sum is 68.

The spelling of 378844448873 in words is "three hundred seventy-eight billion, eight hundred forty-four million, four hundred forty-eight thousand, eight hundred seventy-three".