378604837405 has 4 divisors (see below), whose sum is σ = 454325804892. Its totient is φ = 302883869920.

The previous prime is 378604837399. The next prime is 378604837421. The reversal of 378604837405 is 504738406873.

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 59437464804 + 319167372601 = 243798^2 + 564949^2 .

It is not a de Polignac number, because 378604837405 - 2³ = 378604837397 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 37860483736 + ... + 37860483745.

It is an arithmetic number, because the mean of its divisors is an integer number (113581451223).

Almost surely, 2^378604837405 is an apocalyptic number.

It is an amenable number.

378604837405 is a deficient number, since it is larger than the sum of its proper divisors (75720967487).

378604837405 is an equidigital number, since it uses as much as digits as its factorization.

378604837405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75720967486.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 378604837405 in words is "three hundred seventy-eight billion, six hundred four million, eight hundred thirty-seven thousand, four hundred five".